alidade vs theodolite

alidade and theodolite both are nouns.

Word	Noun	Adjective	Verb	Adverb
alidade	Yes	No	No	No
theodolite	Yes	No	No	No

alidade (noun)	theodolite (noun)
surveying instrument used with a plane table for drawing lines of sight on a distant object and for measuring angles	a surveying instrument for measuring horizontal and vertical angles, consisting of a small telescope mounted on a tripod
surveying instrument consisting of the upper movable part of a theodolite including the telescope and its attachments