environmental science vs bionomics

environmental science and bionomics both are nouns.

Word	Noun	Adjective	Verb	Adverb
environmental science	Yes	No	No	No
bionomics	Yes	No	No	No

As nouns, environmental science and bionomics are synonyms defined as:

environmental science and bionomics: the branch of biology concerned with the relations between organisms and their environment

Other synonyms of environmental science include ecology.

environmental science (noun)	bionomics (noun)
the branch of biology concerned with the relations between organisms and their environment	the branch of biology concerned with the relations between organisms and their environment