Bilabial.
These are sounds formed using both upper and lower lips.
They are represented by the synbols (p) which is voiceless
and (b) and (m) which are voiced we can also describe the (w)
sound found at the beginning of way, walk and world as a
bilabial.
Labiodentals
These are sounds formed with the upper teeth and the
lower lip. They are represented by the symnols (f)
which is voiceless, and (v) which is voiced