pair production vs pair formation

pair production and pair formation both are nouns.

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

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

pair production and pair formation: 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 production include pair creation.

pair production (noun)	pair formation (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