主+口 SHU, nushi, omo - lord, main / KOU, kuchi - mouth
日+女 NICHI, JITSU, hi, ka - sun, day / JO, NYO, NYOU, onna, me - female, woman
公+心 KOU, ooyake - public / SHIN, kokoro - heart
一+口+田 ICHI, ITSU, hito(tsu) - one / KOU, kuchi - mouth / DEN, ta - paddy field
必+山 HITSU, kanara(zu) - definite, sure / SAN, yama - mountain
The saying goes "If something smells, put a lid on it." Adding a lid (⼧ The "Ukanmuri" radical - lid, top) to these characters gives us a few new ones.
害 GAI - injury, damage
宴 EN - feast, banquet
窓 SOU, mado - window
富 FU, FUU, tomi, to(mu) - wealth, be/become rich
密 MITSU - close, dense, minute, secret