Examples: cartography card archaeology archetype monarchy legal loyal purse personal cinema kinase car carpenter hippopotamus Mesopotamia dative data date
...
Proto-Indo-European *h₁en-

→ English in (root)
→ English north (root)
→ English internal (root)
→ English interior (root)
→ English in- (root)
→ English inside (root)
→ English under (root)
→ English enter (root)
→ English into (root)
→ English inter- (root)
→ English intra- (root)
→ English inferior (root)
→ English northern (root)
→ English inner (root)
→ English inferno (root)
→ English nether (root)
→ Bulgarian ядро (root)
→ Czech játra (root)
→ Czech jádro (root)
→ Old Church Slavonic ѫтроба (root)
→ Old Church Slavonic ниць (root)
→ Old Church Slavonic въ (root)
→ Lower Sorbian jětša (root)
→ Lower Sorbian jědro (root)
→ Ancient Greek νέρθεν (root)
→ Hindi नीचा (root)
→ Hindi अंतड़ी (root)
→ Upper Sorbian jatra (root)
→ Kazakh ядро (root)
→ Latin in (root)
→ Latin inferus (root)
→ Macedonian утроба (root)
→ Macedonian јадро (root)
→ Norwegian Bokmål endo- (root)
→ Norwegian Bokmål inn (root)
→ Norwegian Bokmål Norge (root)
→ Norwegian Bokmål endokrin (root)
→ Norwegian Bokmål endokrinolog (root)
→ Norwegian Bokmål endokrinologi (root)
→ Norwegian Bokmål norgesvenn (root)
→ Norwegian Bokmål inn- (root)
→ Norwegian Bokmål innfatte (root)
→ Norwegian Bokmål innfatning (root)
→ Polish jądro (root)
→ Polabian jǫdrĕ (root)
→ Russian в (root)
→ Russian ядро (root)
→ Russian утроба (root)
→ Russian нутро (root)
→ Sanskrit अन्तर (root)
→ Sanskrit अन्तर् (root)
→ Sanskrit नि (root)
→ Sanskrit अधस् (root)
→ Sanskrit अधर (root)
→ Sanskrit अन्त्र (root)
→ Sanskrit अनीक (root)