subfield

As nouns the difference between subset and subfield

is that subset is (set theory) with respect to another set, a set such that each of its elements is also an element of the other set while subfield is a smaller, more specialized area of study or occupation within a larger one.

As nouns the difference between subfield and subdivision

is that subfield is a smaller, more specialized area of study or occupation within a larger one while subdivision is a division into smaller pieces of something that has already been divided; to separate something.

As nouns the difference between subfield and branch

is that subfield is a smaller, more specialized area of study or occupation within a larger one while branch is the woody part of a tree arising from the trunk and usually dividing.

As a verb branch is

to arise from the trunk or a larger branch of a tree.

As a proper noun Branch is

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As nouns the difference between subfield and biogerontology

is that subfield is a smaller, more specialized area of study or occupation within a larger one while biogerontology is a subfield of gerontology that studies the biological processes of aging.