joke vs pleasantry

joke and pleasantry both are nouns.

Word	Noun	Adjective	Verb	Adverb
joke	Yes	No	Yes	No
pleasantry	Yes	No	No	No

As nouns, pleasantry is a hyponym of joke; that is, pleasantry is a word with a more specific, narrower meaning than joke:

Other hyponyms of joke include drollery, waggery, leg-pull, leg-pulling.

joke (noun)	pleasantry (noun)
a ludicrous or grotesque act done for fun and amusement	an agreeable or amusing remark
activity characterized by good humor
a triviality not to be taken seriously
a humorous anecdote or remark intended to provoke laughter

joke (verb)	pleasantry (verb)
act in a funny or teasing way
tell a joke; speak humorously