emotional arousal vs arousal

emotional arousal and arousal both are nouns.

Word	Noun	Adjective	Verb	Adverb
emotional arousal	Yes	No	No	No
arousal	Yes	No	No	No

As nouns, arousal is a hypernym of emotional arousal; that is, arousal is a word with a broader meaning than emotional arousal:

emotional arousal (noun)	arousal (noun)
the arousal of strong emotions and emotional behavior	the act of arousing
	mutual sexual fondling prior to sexual intercourse
	awakening from sleep
	a state of heightened physiological activity