paragram vs paronomasia

paragram and paronomasia both are nouns.

Word	Noun	Adjective	Verb	Adverb
paragram	Yes	No	No	No
paronomasia	Yes	No	No	No

As nouns, paronomasia is a hypernym of paragram; that is, paronomasia is a word with a broader meaning than paragram:

paragram: a pun made by changing the letters of a word, especially the initial letter.
paronomasia: a humorous play on words

Other hypernyms of paragram include pun, punning, wordplay.

paragram (noun)	paronomasia (noun)
a pun made by changing the letters of a word, especially the initial letter.	a humorous play on words