military vs echelon

military and echelon both are nouns.

Word	Noun	Adjective	Verb	Adverb
military	Yes	Yes	No	No
echelon	Yes	No	No	No

military (noun)	echelon (noun)
the military forces of a nation	a diffraction grating consisting of a pile of plates of equal thickness arranged stepwise with a constant offset
	a body of troops arranged in a line
	status in a society or organization

military (adjective)	echelon (adjective)
associated with or performed by members of the armed services as contrasted with civilians
characteristic of or associated with soldiers or the military
of or relating to the study of the principles of warfare