pressure level vs force per unit area

pressure level and force per unit area both are nouns.

Word	Noun	Adjective	Verb	Adverb
pressure level	Yes	No	No	No
force per unit area	Yes	No	No	No

As nouns, pressure level and force per unit area are synonyms defined as:

pressure level and force per unit area: the force applied to a unit area of surface; measured in pascals (SI unit) or in dynes (cgs unit)

Other synonyms of pressure level include pressure.

pressure level (noun)	force per unit area (noun)
the force applied to a unit area of surface; measured in pascals (SI unit) or in dynes (cgs unit)	the force applied to a unit area of surface; measured in pascals (SI unit) or in dynes (cgs unit)