intensity level vs intensity

intensity level and intensity both are nouns.

Word	Noun	Adjective	Verb	Adverb
intensity level	Yes	No	No	No
intensity	Yes	No	No	No

As nouns, intensity level and intensity are synonyms defined as:

intensity level and intensity: the amount of energy transmitted (as by acoustic or electromagnetic radiation)

Other synonyms of intensity level include strength.

intensity level (noun)	intensity (noun)
the amount of energy transmitted (as by acoustic or electromagnetic radiation)	high level or degree; the property of being intense
	chromatic purity: freedom from dilution with white and hence vivid in hue
	the magnitude of sound (usually in a specified direction)
	the amount of energy transmitted (as by acoustic or electromagnetic radiation)