कार्यहास्यं तु विज्ञेयमसंबद्धप्रभाषणात् । अनर्थकैर्विकारैश्च तथा चाश्लीलभाषितैः ॥ १४१॥
Laughter caused by speech (vākya-hāsya) is to be understood as arising from incoherent talking, meaningless distortions, and the use of obscene language.
A person adorned with rags, animal skins, lamp-black, ashes, or red ochre, O Brāhmaṇas, is considered to cause laughter due to costume and make-up (nepathyaja hāsya).
Hence, after understanding the character's nature properly, the actor should present the appropriate emotion genuinely, and distinguish the movement and Gait according to the various states or situations involved.