klick vs km

klick and km both are nouns.

Word	Noun	Adjective	Verb	Adverb
klick	Yes	No	No	No
km	Yes	No	No	No

As nouns, klick and km are synonyms defined as:

klick and km: a metric unit of length equal to 1000 meters (or 0.621371 miles)

Other synonyms of klick include kilometer, kilometre.

klick (noun)	km (noun)
a metric unit of length equal to 1000 meters (or 0.621371 miles)	a metric unit of length equal to 1000 meters (or 0.621371 miles)