diff --git a/content/api.ttl b/content/api.ttl
new file mode 100644
index 0000000..952fdaa
--- /dev/null
+++ b/content/api.ttl
@@ -0,0 +1,11 @@
+@prefix : <http://glossary.orcfax.io/#> .
+@prefix skos: <http://www.w3.org/2004/02/skos/core#> .
+:api
+    skos:prefLabel "API"@en;
+    skos:definition '''
+      A structured and predictable software interface which
+      provides a contract between external software components
+      for accessing data or services and better enabling
+      inter-connectivity between components.
+    ''' ;
+    skos:altLabel "application programming interface ".
diff --git a/content/consensus.ttl b/content/consensus.ttl
new file mode 100644
index 0000000..e1c8e82
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+++ b/content/consensus.ttl
@@ -0,0 +1,18 @@
+@prefix : <http://glossary.orcfax.io/#> .
+@prefix skos: <http://www.w3.org/2004/02/skos/core#> .
+:consensus
+    skos:prefLabel "consensus"@en;
+    skos:definition '''
+      A state which can be understood differently depending on
+      context:
+
+      When a task performed by an actor is verified as having
+      being performed, according set principles, by multiple
+      other actors.
+
+      When the properties of an output can be verified as
+      accurate by n- actors.
+
+      When the result of an output has been independently
+      observed by n- independent actors.
+    ''' .
diff --git a/content/consumer.ttl b/content/consumer.ttl
index 127eb2d..67574a2 100644
--- a/content/consumer.ttl
+++ b/content/consumer.ttl
@@ -3,8 +3,11 @@
 :consumer
     skos:prefLabel "consumer"@en;
     skos:definition '''
-      Someone who might read the output of an Orcfax datum but
-      not necessarily integrate it, see
-      [integrator](#integrator).
+      A participant, either directly or indirectly, in a
+      transaction within which orcfax data is used.
+
+      Example:
+      the user of a lending platform which has integrated Orcfax
+      feeds is a consumer.
     ''' ;
     skos:related :integrator.
diff --git a/content/dataSource.ttl b/content/dataSource.ttl
new file mode 100644
index 0000000..1720905
--- /dev/null
+++ b/content/dataSource.ttl
@@ -0,0 +1,9 @@
+@prefix : <http://glossary.orcfax.io/#> .
+@prefix skos: <http://www.w3.org/2004/02/skos/core#> .
+:dataSource
+    skos:prefLabel "data source"@en;
+    skos:definition '''
+       A person or entity that provides access to data for use
+       by others.
+    ''' ;
+    skos:narrower :primaryDataSource.
diff --git a/content/function.ttl b/content/function.ttl
new file mode 100644
index 0000000..a9be746
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+++ b/content/function.ttl
@@ -0,0 +1,9 @@
+@prefix : <http://glossary.orcfax.io/#> .
+@prefix skos: <http://www.w3.org/2004/02/skos/core#> .
+:function
+    skos:prefLabel "function"@en;
+    skos:definition '''
+      A distinct and self-contained unit of code that
+      accomplishes a specific task using given inputs to
+      generate a predictable output.
+    ''' .
diff --git a/content/oracleProblem.ttl b/content/oracleProblem.ttl
new file mode 100644
index 0000000..20e49ca
--- /dev/null
+++ b/content/oracleProblem.ttl
@@ -0,0 +1,10 @@
+@prefix : <http://glossary.orcfax.io/#> .
+@prefix skos: <http://www.w3.org/2004/02/skos/core#> .
+:oracleProblem
+    skos:prefLabel "oracle problem"@en;
+    skos:definition '''
+      The challenge of providing security, authenticity, and
+      trust, to information brought onto a blockchain in a
+      decentralized manner.
+    ''' ;
+    skos:related :oracle.
diff --git a/content/primaryDataSource.ttl b/content/primaryDataSource.ttl
new file mode 100644
index 0000000..7e00ec0
--- /dev/null
+++ b/content/primaryDataSource.ttl
@@ -0,0 +1,15 @@
+@prefix : <http://glossary.orcfax.io/#> .
+@prefix skos: <http://www.w3.org/2004/02/skos/core#> .
+:primaryDataSource
+    skos:prefLabel "primary data source"@en;
+    skos:definition '''
+       Data collected firsthand by a person or entity during the
+       course of regular activity and made available for use by
+       others.
+
+       Example:
+       A CEX can be considered a primary data source when the
+       price data it provides is derived from the its own order
+       books and not from external data.
+    ''' ;
+    skos:broader :dataSource.
diff --git a/content/sourceDataPoint.ttl b/content/sourceDataPoint.ttl
new file mode 100644
index 0000000..51ab197
--- /dev/null
+++ b/content/sourceDataPoint.ttl
@@ -0,0 +1,11 @@
+@prefix : <http://glossary.orcfax.io/#> .
+@prefix skos: <http://www.w3.org/2004/02/skos/core#> .
+:sourceDataPoint
+    skos:prefLabel "source data point"@en;
+    skos:definition '''
+      The value of a data source, or primary data source, query
+      which is embedded in that data source's response to a
+      given query.
+    ''' ;
+    skos:related ex1:dataSource ;
+    skos:related ex2:primaryDataSource.
diff --git a/content/triangulatedDataPoint.ttl b/content/triangulatedDataPoint.ttl
new file mode 100644
index 0000000..70a924d
--- /dev/null
+++ b/content/triangulatedDataPoint.ttl
@@ -0,0 +1,9 @@
+@prefix : <http://glossary.orcfax.io/#> .
+@prefix skos: <http://www.w3.org/2004/02/skos/core#> .
+:triangulatedDataPoint
+    skos:prefLabel "triangulated data point"@en;
+    skos:definition '''
+       Noun
+       The data resulting from the process of triangulation.
+    ''' ;
+    skos:related :triangulation.
diff --git a/content/trustless.ttl b/content/trustless.ttl
new file mode 100644
index 0000000..a280e1e
--- /dev/null
+++ b/content/trustless.ttl
@@ -0,0 +1,9 @@
+@prefix : <http://glossary.orcfax.io/#> .
+@prefix skos: <http://www.w3.org/2004/02/skos/core#> .
+:trustless
+    skos:prefLabel "trustless"@en;
+    skos:definition '''
+      A description given to a non-excludable system which does
+      not require its users to rely upon or trust an
+      intermediary.
+    ''' .