suddenness vs precipitation

suddenness and precipitation both are nouns.

Word	Noun	Adjective	Verb	Adverb
suddenness	Yes	No	No	No
precipitation	Yes	No	No	No

As nouns, precipitation is a hypernym of suddenness; that is, precipitation is a word with a broader meaning than suddenness:

Other hypernyms of suddenness include haste, hastiness, hurriedness, hurry.

suddenness (noun)	precipitation (noun)
the quality of happening with headlong haste or without warning	an unexpected acceleration or hastening
	overly eager speed (and possible carelessness)
	the act of casting down or falling headlong from a height
	the falling to earth of any form of water (rain or snow or hail or sleet or mist)
	the process of forming a chemical precipitate
	the quantity of water falling to earth at a specific place within a specified period of time