typology vs Enneagram

typology and Enneagram both are nouns.

Word	Noun	Adjective	Verb	Adverb
typology	Yes	No	No	No
Enneagram	Yes	No	No	No

As nouns, Enneagram is a hyponym of typology; that is, Enneagram is a word with a more specific, narrower meaning than typology:

typology: classification according to general type
Enneagram: a model of human personality which is principally understood and taught as a typology of nine interconnected personality types.

typology (noun)	Enneagram (noun)
classification according to general type	a model of human personality which is principally understood and taught as a typology of nine interconnected personality types.