customer vs trick

customer and trick both are nouns.

Word	Noun	Adjective	Verb	Adverb
customer	Yes	No	No	No
trick	Yes	No	Yes	No

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

customer (noun)	trick (noun)
someone who pays for goods or services	a ludicrous or grotesque act done for fun and amusement
	(card games) in a single round, the sequence of cards played by all the players; the high card is the winner
	an illusory feat; considered magical by naive observers
	an attempt to get you to do something foolish or imprudent
	a cunning or deceitful action or device
	a prostitute's customer
	a period of work or duty

customer (verb)	trick (verb)
	deceive somebody