They are differentiated primarily by their artwork.

Nalukettus are primarily differentiated based on their structure.

Songs are differentiated primarily by use: in ceremonies, often associated with specific objects (especially in medicine bundles), concepts, dances, or actions, or during gambling (hand game), or other uses.

It is differentiated from the underlying Portezuelo Formation primarily by its higher content of argillites (mud deposits) and was deposited under fluvial conditions.

Tamil dialects are primarily differentiated from each other by the fact that they have undergone different phonological changes and sound shifts in evolving from Old Tamil.

This subsector is differentiated from the rest of the chemical sector primarily by bulk.

The Catalina Schist is differentiated from the Franciscan primarily in the style of mélange formed during subduction.

There are four subspecies which are primarily differentiated by differences in the color and shape of the carapace:

Rather than varying notably in passive elements, classes are differentiated primarily by what active-use class features and powers they give, all of which follow the same per-level assignments.

The PS2 is primarily differentiated between models featuring the original "fat" case design and "slimline" models, which were introduced at the end of 2004.