Galilean vs Io

Galilean and Io both are nouns.

Word	Noun	Adjective	Verb	Adverb
Galilean	Yes	Yes	No	No
Io	Yes	No	No	No

Galilean (noun)	Io (noun)
one of the four satellites of Jupiter that were discovered by Galileo	the closest of Jupiter's moons; has active volcanoes
an inhabitant of Galilee (an epithet of Jesus Christ)	(Greek mythology) a maiden seduced by Zeus; when Hera was about to discover them together Zeus turned her into a white heifer

Galilean (adjective)	Io (adjective)
of or relating to Galilee or its inhabitants
of or relating to Galileo or his works