As nouns the difference between labium and co
is that labium
is (anatomy) a liplike structure; especially one of the two pairs of folds of skin either side of the vulva while co
As a pronoun co is
(neologism|nonstandard) they (singular
(anatomy) A liplike structure; especially one of the two pairs of folds of skin either side of the vulva.
(botany) The lip of a labiate corolla.
(music) The lip against which pressured air is driven in a flue pipe in an organ.
* labia majora
* labia minora
The ISO 3166-1 two-letter (alpha-2) code for Colombia.
The molecular formula for carbon monoxide.