The consonants f and v represent labiodental fricative consonants, respectively voiceless and voiced.
The labiodental fricative sounds are:
f: face, five, fox;
v: vanilla, vase, seven.
Labiodental fricative consonants are pronounced by impeding the flow of air with the teeth, which come in contact with the lower lip, so a friction sound is produced.
- f: voiceless, vocal cords do not vibrate during the articulation of the consonant;
- v: voiced, vocal cords vibrate during the articulation of the consonant.