matey vs chummy

matey and chummy both are adjectives.

Word	Noun	Adjective	Verb	Adverb
matey	No	Yes	No	No
chummy	No	Yes	No	No

As adjectives, matey and chummy are synonyms defined as:

matey and chummy: (used colloquially) having the relationship of friends or pals

Other synonyms of matey include pally, palsy-walsy.

matey (adjective)	chummy (adjective)
(used colloquially) having the relationship of friends or pals	(used informally) associated on close terms
	(used colloquially) having the relationship of friends or pals