"Embouchement" Natural Recordings by Native Speakers
Embouchure (not embouchement, although embouchement is sometimes used in brass and woodwind playing) refers to the position and shape of the lips, facial muscles, and jaw when playing a brass or reed instrument, such as a trumpet, trombone, or French horn. It is the way in which the musician forms a seal between the mouthpiece and the lips, which affects the instrument's pitch, tone, and overall sound. A proper embouchure is essential for producing a good sound and avoiding discomfort or pain while playing.
To emboss means to raise or create a design, shape, or lettering on a surface such as paper, leather, or metal by pressing it into the material with a mold or die, typically from the opposite side.