collocation vs emplacement

collocation and emplacement both are nouns.

Word	Noun	Adjective	Verb	Adverb
collocation	Yes	No	No	No
emplacement	Yes	No	No	No

As nouns, emplacement is a hypernym of collocation; that is, emplacement is a word with a broader meaning than collocation:

Other hypernyms of collocation include locating, location, placement, position, positioning.

collocation (noun)	emplacement (noun)
the act of positioning close together (or side by side)	the act of putting something in a certain place
a grouping of words in a sentence	military installation consisting of a prepared position for siting a weapon