souvenir vs love-token

souvenir and love-token both are nouns.

Word	Noun	Adjective	Verb	Adverb
souvenir	Yes	No	No	No
love-token	Yes	No	No	No

As nouns, love-token is a hyponym of souvenir; that is, love-token is a word with a more specific, narrower meaning than souvenir:

Other hyponyms of souvenir include favor, favour, party favor, party favour.

souvenir (noun)	love-token (noun)
something of sentimental value	keepsake given as a token of love
a reminder of past events