diff --git a/docs/ogm-aardvark/resource-type-vocabulary-ogm.csv b/docs/ogm-aardvark/resource-type-vocabulary-ogm.csv
index 9f7dfdc8..4db4cdb3 100644
--- a/docs/ogm-aardvark/resource-type-vocabulary-ogm.csv
+++ b/docs/ogm-aardvark/resource-type-vocabulary-ogm.csv
@@ -1,15 +1,15 @@
-Term,source
-Annotations,OGM
-Basemaps,OGM
-LiDAR,OGM
-Line data,OGM
-Mesh data,OGM
-Multi-spectral data,OGM
-Oblique photographs,OGM
-Point cloud data,OGM
-Point data,OGM
-Polygon data,OGM
-Raster data,OGM
-Satellite imagery,OGM
-Streetview photographs,OGM
-Table data,OGM
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+Term,Definition
+Annotations,"Text or graphics that label information about features"
+Basemaps,"Background map that provides geographical context for other data layers"
+LiDAR,"Elevation data, often provided as a point cloud or DEM"
+Line data,"XY coordinate-based (vector) data represented as lines"
+Mesh data,"Unstructured grid of vertices, edges, and faces, often with a temporal component; common formats include NetCDF, GRIB, XMDF, DAT, 3Di"
+Multi-spectral data,"Raster data with more than 1 band, often capturing a range of visible and non-visible light (e.g. near-infrared)"
+Oblique photographs,"Photos taken from the air or other elevated point at an angle of around 45 degrees"
+Point cloud data,"XYZ coordinate data, often captured through LiDAR, 3D scanning, or photogrammetry and used to create 3D models"
+Point data,"XY coordinate-based (vector) data represented as points"
+Polygon data,"XY coordinate-based (vector) data represented as polygons"
+Raster data,"Structured grid containing 1+ bands of decimal or integer data" 
+Satellite imagery,"Photos or radar images captured of the earth from orbiting satellites"
+Streetview photographs,"Photos taken at an angle parallel to the ground surface (i.e. most photos taken while standing on the ground)" 
+Table data,"Structured tabular data"
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