contest vs competition

contest and competition both are nouns.

Word	Noun	Adjective	Verb	Adverb
contest	Yes	No	Yes	No
competition	Yes	No	No	No

As nouns, competition is a hypernym of contest; that is, competition is a word with a broader meaning than contest:

Other hypernyms of contest include contention, rivalry.

As nouns, contest and competition are synonyms defined as:

contest and competition: an occasion on which a winner is selected from among two or more contestants

contest (noun)	competition (noun)
a struggle between rivals	the act of competing as for profit or a prize
an occasion on which a winner is selected from among two or more contestants	an occasion on which a winner is selected from among two or more contestants
	the contestant you hope to defeat
	a business relation in which two parties compete to gain customers

contest (verb)	competition (verb)
to make the subject of dispute, contention, or litigation