observatory vs lookout station

observatory and lookout station both are nouns.

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

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

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

Other synonyms of observatory include lookout, observation tower.

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