lips and teeth; mutually dependent relation
labiate; lip-like; lip-shaped
oral herpes; cold sores; herpes simplex virus 1; HSV-1
nasolabial sulcus; nasolabial groove; nasolabial fold
red lips and pearly white teeth (said of beautiful women)
oral character (in psychoanalysis)
labiodental; labiodental consonant
rounding of the lips; rounded (e.g. vowel)