touch on vs ameliorate

touch on and ameliorate both are verbs.

Word	Noun	Adjective	Verb	Adverb
touch on	No	No	Yes	No
ameliorate	No	No	Yes	No

As verbs, ameliorate is a hypernym of touch on; that is, ameliorate is a word with a broader meaning than touch on:

touch on: restore by replacing a part or putting together what is torn or broken
ameliorate: to make better

Other hypernyms of touch on include amend, better, improve, meliorate.

touch on (verb)	ameliorate (verb)
restore by replacing a part or putting together what is torn or broken	get better
have an effect upon	to make better
refer to or discuss briefly
be relevant to