allometry vs subject field

allometry and subject field both are nouns.

Word	Noun	Adjective	Verb	Adverb
allometry	Yes	No	No	No
subject field	Yes	No	No	No

As nouns, subject field is a hypernym of allometry; that is, subject field is a word with a broader meaning than allometry:

allometry: the study of the relative growth of a part of an organism in relation to the growth of the whole
subject field: a branch of knowledge

Other hypernyms of allometry include bailiwick, discipline, field, field of study, study, subject, subject area.

allometry (noun)	subject field (noun)
the study of the relative growth of a part of an organism in relation to the growth of the whole	a branch of knowledge