dkm vs decameter

dkm and decameter both are nouns.

Word	Noun	Adjective	Verb	Adverb
dkm	Yes	No	No	No
decameter	Yes	No	No	No

As nouns, dkm and decameter are synonyms defined as:

Other synonyms of dkm include dam, decametre, dekameter, dekametre.

dkm (noun)	decameter (noun)
a metric unit of length equal to ten meters	a metric unit of length equal to ten meters