objective vs optical telescope

objective and optical telescope both are nouns.

Word	Noun	Adjective	Verb	Adverb
objective	Yes	Yes	No	No
optical telescope	Yes	No	No	No

objective (noun)	optical telescope (noun)
the lens or system of lenses in a telescope or microscope that is nearest the object being viewed	an astronomical telescope designed to collect and record light from cosmic sources
the goal intended to be attained (and which is believed to be attainable)

objective (adjective)	optical telescope (adjective)
undistorted by emotion or personal bias; based on observable phenomena
serving as or indicating the object of a verb or of certain prepositions and used for certain other purposes
belonging to immediate experience of actual things or events
emphasizing or expressing things as perceived without distortion of personal feelings or interpretation