title-holder vs competition

title-holder and competition both are nouns.

Word	Noun	Adjective	Verb	Adverb
title-holder	Yes	No	No	No
competition	Yes	No	No	No

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

Other hypernyms of title-holder include challenger, competitor, contender, rival.

title-holder (noun)	competition (noun)
someone who has won first place in a competition	the act of competing as for profit or a prize
	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