This is how you sign Vocabulary in American Sign Language.
Learn how to sign "vocabulary" in American Sign Language(ASL). Extend one hand in front of you, keeping the index finger upright while the other fingers are in a closed fist. Use the other hand to create a 'G' handshape by extending the thumb and index finger while curling the remaining fingers into the palm. Touch the fingertips of the second hand's index finger and thumb against the side of the index finger on the first hand. Repeat this movement while gliding them sideways.