Abhinaya (Sanskrit abhi- 'towards' + nii- 'leading/guide') is the art of expression in Indian aesthetics. More accurately it means "leading an audience towards" the experience (bhava) of a sentiment (rasa). The concept, derived from Bharata Muni's Natya Shastra, is used as an integral part of all Indian classical dance styles. Abhinaya can be divided into four, according to the Natya Shastra. Angika Abhinaya denotes the movements of angas like head, hands, waist and face. Pratyangas like shoulder, shoulder arm's, thighs, knees and elbows and upangas like eyes, eyelid, cheeks, nose, lips and teeth. Additional hastas (hand gestures) have always played a significant role in conveyance of the emotion and through of a soul. Many of the natural gestures are found common to mankind and their meaning easily understood. Speech is used in drama and also in music when the singer expresses the emotion through his or her singing. In the Kuchipudi and Melattur styles of Indian classical dance the dancers often mouth the words of the songs (padartha abhinaya). Kerala still has stage art forms that have Vāchika Abhinaya as a dominant component - Koodiyattam, Nangyar Kooothu, Ottan, Seetangan & Parayan - the three types of Thullal, Mudiyettu are the most popular. Another means of representation of the play is indeed the costumes and physical decorations of the actors and the theatre. In dramas and dance dramas, costume and making are distinguished by the sex, race, sect or class, or the social position of the characters, giving the production of the presentation some semblance of reality. The decorations of the stage theatre including lights and accessories are related to the scene of the depiction in which enhances the rasa between the audience and artists also comes under this category. In kathakali there are totally different dresses and makeup for 4 different characters; the good characters have green makeup while the demons have Kati vesham in which the nose is painted red. But in solo dance performances aharya abhinaya is a convention to it.