pair formation vs pair creation

pair formation and pair creation both are nouns.

Word	Noun	Adjective	Verb	Adverb
pair formation	Yes	No	No	No
pair creation	Yes	No	No	No

As nouns, pair formation and pair creation are synonyms defined as:

pair formation and pair creation: the transformation of a gamma-ray photon into an electron and a positron when the photon passes close to an atomic nucleus

Other synonyms of pair formation include pair production.

pair formation (noun)	pair creation (noun)
the transformation of a gamma-ray photon into an electron and a positron when the photon passes close to an atomic nucleus	the transformation of a gamma-ray photon into an electron and a positron when the photon passes close to an atomic nucleus