chaff vs josh

chaff is a noun but josh is not a noun.

Word	Noun	Adjective	Verb	Adverb
chaff	Yes	No	Yes	No
josh	No	No	Yes	No

As verbs, chaff and josh are synonyms defined as:

Other synonyms of chaff include banter, jolly, kid.

chaff (noun)	josh (noun)
foil in thin strips; ejected into the air as a radar countermeasure
material consisting of seed coverings and small pieces of stem or leaves that have been separated from the seeds

chaff (verb)	josh (verb)
be silly or tease one another	be silly or tease one another