The term 'crescent' is used to describe a shape that is curved like a moon, with two points on either side. MENISCUS is an 8-letter word that refers to the curved shape of a crescent, while lune is a 4-letter word that also describes the curved shape of a crescent. ARC is a 3-letter word that is used to describe the curved line of a crescent. Semilunar is a 9-letter word that means half-moon, and halfmoon is an 8-letter word that also describes the shape of a crescent. All of these words are related to the term crescent, which is used to describe a curved shape that resembles a moon.