coarsen vs alter

coarsen and alter both are verbs.

Word	Noun	Adjective	Verb	Adverb
coarsen	No	No	Yes	No
alter	No	No	Yes	No

As verbs, alter is a hypernym of coarsen; that is, alter is a word with a broader meaning than coarsen:

Other hypernyms of coarsen include change, modify.

As verbs, alter is a hypernym of coarsen; that is, alter is a word with a broader meaning than coarsen:

Other hypernyms of coarsen include change, modify.

coarsen (verb)	alter (verb)
make less subtle or refined	remove the ovaries of
make or become coarse or coarser	become different in some particular way, without permanently losing one's or its former characteristics or essence
	cause to change; make different; cause a transformation
	insert words into texts, often falsifying it thereby
	make an alteration to