PSF vs terrorist organization

PSF and terrorist organization both are nouns.

Word	Noun	Adjective	Verb	Adverb
PSF	Yes	No	No	No
terrorist organization	Yes	No	No	No

PSF (noun)	terrorist organization (noun)
a terrorist group of radical Palestinians who split with al-Fatah in 1967 but now have close relations with al-Fatah; staged terrorist attacks against Israel across the Lebanese border	a political movement that uses terror as a weapon to achieve its goals