pj's vs jammies

pj's and jammies both are nouns.

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

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

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

Other synonyms of pj's include pajama, pyjama.

pj's (noun)	jammies (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