allometry vs field of study

allometry and field of study both are nouns.

Word	Noun	Adjective	Verb	Adverb
allometry	Yes	No	No	No
field of study	Yes	No	No	No

As nouns, field of study is a hypernym of allometry; that is, field of study 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
field of study: a branch of knowledge

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

allometry (noun)	field of study (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