right to vote vs suffrage

right to vote and suffrage both are nouns.

Word	Noun	Adjective	Verb	Adverb
right to vote	Yes	No	No	No
suffrage	Yes	No	No	No

As nouns, right to vote and suffrage are synonyms defined as:

right to vote and suffrage: a legal right guaranteed by the 15th amendment to the US Constitution; guaranteed to women by the 19th amendment

Other synonyms of right to vote include vote.

right to vote (noun)	suffrage (noun)
a legal right guaranteed by the 15th amendment to the US Constitution; guaranteed to women by the 19th amendment	a legal right guaranteed by the 15th amendment to the US Constitution; guaranteed to women by the 19th amendment