Root ع ج م(E j m) has 4 unique word forms and appears 4 times in the Quran.

English gloss Try to test, Foreigner

Word Translation Occurrences
ءَا۬عۡجَمِيّٞ (Is it) a foreign (language) 2
أَعۡجَمِيّٞ (is) foreign 2
أَعۡجَمِيّٗا (in) a foreign (language) 2
ٱلۡأَعۡجَمِينَ (of) the non-Arabs 2