sound pressure level vs acoustic power

sound pressure level and acoustic power both are nouns.

Word	Noun	Adjective	Verb	Adverb
sound pressure level	Yes	No	No	No
acoustic power	Yes	No	No	No

As nouns, sound pressure level and acoustic power are synonyms defined as:

sound pressure level and acoustic power: the physical intensity of sound

sound pressure level (noun)	acoustic power (noun)
the physical intensity of sound	the physical intensity of sound