What is consonant made with two lips?

Consonants made with two lips are called bilabial consonants. In phonetics, they are produced by bringing both lips together to obstruct the airflow. The most common bilabial consonants are /p/, /b/, /m/, and /w/.

The /p/ sound is a voiceless bilabial stop, which means that it is produced by completely blocking the airflow with the two lips and then releasing it abruptly. The /b/ sound, on the other hand, is a voiced bilabial stop, which involves activating the vocal cords while making the same lip closure as with /p/.

The /m/ sound is a bilabial nasal, where the air flows through the nose instead of the mouth. The lips remain closed but the vocal cords produce sound.

The sound /w/ is often called labio-velar because it is actually made with both the lips and the back of the tongue, where it creates a narrow opening in the pharynx. It is also known as a semivowel or glide because its production involves both the consonant and vowel qualities.

Overall, bilabial consonants are common and important sounds in many languages and are relatively easy to produce because they involve only two lips.