jammies vs pj's

jammies and pj's both are nouns.

Word	Noun	Adjective	Verb	Adverb
jammies	Yes	No	No	No
pj's	Yes	No	No	No

As nouns, jammies and pj's are synonyms defined as:

jammies and pj's: (usually plural) loose-fitting nightclothes worn for sleeping or lounging; have a jacket top and trousers

Other synonyms of jammies include pajama, pyjama.

jammies (noun)	pj's (noun)
(usually plural) loose-fitting nightclothes worn for sleeping or lounging; have a jacket top and trousers	(usually plural) loose-fitting nightclothes worn for sleeping or lounging; have a jacket top and trousers