paleoecology vs bionomics

paleoecology and bionomics both are nouns.

Word	Noun	Adjective	Verb	Adverb
paleoecology	Yes	No	No	No
bionomics	Yes	No	No	No

As nouns, bionomics is a hypernym of paleoecology; that is, bionomics is a word with a broader meaning than paleoecology:

paleoecology: the branch of ecology that studies ancient ecology
bionomics: the branch of biology concerned with the relations between organisms and their environment

Other hypernyms of paleoecology include ecology, environmental science.

paleoecology (noun)	bionomics (noun)
the branch of ecology that studies ancient ecology	the branch of biology concerned with the relations between organisms and their environment