lookout station vs observatory

lookout station and observatory both are nouns.

Word	Noun	Adjective	Verb	Adverb
lookout station	Yes	No	No	No
observatory	Yes	No	No	No

As nouns, lookout station and observatory are synonyms defined as:

lookout station and observatory: a structure commanding a wide view of its surroundings

Other synonyms of lookout station include lookout, observation tower.

lookout station (noun)	observatory (noun)
a structure commanding a wide view of its surroundings	a building designed and equipped to observe astronomical phenomena
	a structure commanding a wide view of its surroundings