partial eclipse vs occultation

partial eclipse and occultation both are nouns.

Word	Noun	Adjective	Verb	Adverb
partial eclipse	Yes	No	No	No
occultation	Yes	No	No	No

As nouns, occultation is a hypernym of partial eclipse; that is, occultation is a word with a broader meaning than partial eclipse:

partial eclipse: an eclipse in which the eclipsed body is only partially obscured
occultation: one celestial body obscures another

Other hypernyms of partial eclipse include eclipse.

partial eclipse (noun)	occultation (noun)
an eclipse in which the eclipsed body is only partially obscured	one celestial body obscures another