objection vs dissent

objection and dissent both are nouns.

Word	Noun	Adjective	Verb	Adverb
objection	Yes	No	No	No
dissent	Yes	No	Yes	No

As nouns, objection and dissent are synonyms defined as:

objection and dissent: the act of protesting; a public (often organized) manifestation of dissent

Other synonyms of objection include protest.

As nouns, dissent is a hyponym of objection; that is, dissent is a word with a more specific, narrower meaning than objection:

objection: the speech act of objecting
dissent: (law) the difference of one judge's opinion from that of the majority

objection (noun)	dissent (noun)
(law) a procedure whereby a party to a suit says that a particular line of questioning or a particular witness or a piece of evidence or other matter is improper and should not be continued and asks the court to rule on its impropriety or illegality	the act of protesting; a public (often organized) manifestation of dissent
the act of protesting; a public (often organized) manifestation of dissent	(law) the difference of one judge's opinion from that of the majority
the speech act of objecting	a difference of opinion
the act of expressing earnest opposition or protest

objection (verb)	dissent (verb)
	withhold assent
	be of different opinions
	express opposition through action or words