acoustic power vs sound pressure level

acoustic power and sound pressure level both are nouns.

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

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

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

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