galago vs lemur

galago and lemur both are nouns.

Word	Noun	Adjective	Verb	Adverb
galago	Yes	No	No	No
lemur	Yes	No	No	No

As nouns, lemur is a hypernym of galago; that is, lemur is a word with a broader meaning than galago:

galago: agile long-tailed nocturnal African lemur with dense woolly fur and large eyes and ears
lemur: large-eyed arboreal prosimian having foxy faces and long furry tails

galago (noun)	lemur (noun)
agile long-tailed nocturnal African lemur with dense woolly fur and large eyes and ears	large-eyed arboreal prosimian having foxy faces and long furry tails