efflorescence vs eruption

efflorescence and eruption both are nouns.

Word	Noun	Adjective	Verb	Adverb
efflorescence	Yes	No	No	No
eruption	Yes	No	No	No

As nouns, eruption is a hypernym of efflorescence; that is, eruption is a word with a broader meaning than efflorescence:

efflorescence (noun)	eruption (noun)
a powdery deposit on a surface	the sudden occurrence of a violent discharge of steam and volcanic material
the time and process of budding and unfolding of blossoms	a sudden very loud noise
any red eruption of the skin	the emergence of a tooth as it breaks through the gum
the period of greatest prosperity or productivity	a sudden violent spontaneous occurrence (usually of some undesirable condition)
	(of volcanoes) pouring out fumes or lava (or a deposit so formed)
	symptom consisting of a breaking out and becoming visible