terrorist group vs foreign terrorist organization

terrorist group and foreign terrorist organization both are nouns.

Word	Noun	Adjective	Verb	Adverb
terrorist group	Yes	No	No	No
foreign terrorist organization	Yes	No	No	No

As nouns, terrorist group and foreign terrorist organization are synonyms defined as:

terrorist group and foreign terrorist organization: a political movement that uses terror as a weapon to achieve its goals

Other synonyms of terrorist group include FTO, terrorist organization.

terrorist group (noun)	foreign terrorist organization (noun)
a political movement that uses terror as a weapon to achieve its goals	a political movement that uses terror as a weapon to achieve its goals