nuclear physics vs atomic physics

nuclear physics and atomic physics both are nouns.

Word	Noun	Adjective	Verb	Adverb
nuclear physics	Yes	No	No	No
atomic physics	Yes	No	No	No

As nouns, nuclear physics and atomic physics are synonyms defined as:

nuclear physics and atomic physics: the branch of physics that studies the internal structure of atomic nuclei

Other synonyms of nuclear physics include nucleonics.

nuclear physics (noun)	atomic physics (noun)
the branch of physics that studies the internal structure of atomic nuclei	the branch of physics that studies the internal structure of atomic nuclei