Ganesha has been ascribed many other titles and epithets, including Ganapati (Ganpati) and Vighneshvara. The Hindu title of respect Shri (Sanskrit: श्री; IAST: śrī; also spelled Sri or Shree) is often added before his name.
The name Ganesha is a Sanskrit compound, joining the words gana (gaṇa), meaning a group, multitude, or categorical system and isha (īśa), meaning lord or master.The word gaṇa when associated with Ganesha is often taken to refer to the gaṇas, a troop of semi-divine beings that form part of the retinue of Shiva, Ganesha's father.The term more generally means a category, class, community, association, or corporation.Some commentators interpret the name "Lord of the Gaṇas" to mean "Lord of Hosts" or "Lord of created categories", such as the elements.Ganapati (गणपति; gaṇapati), a synonym for Ganesha, is a compound composed of gaṇa, meaning "group", and pati, meaning "ruler" or "lord". Though the earliest mention of the word Ganapati is found in hymn 2.23.1 of the 2nd-millennium BCE Rigveda, it is however uncertain that the Vedic term referred specifically to Ganesha.The Amarakosha, an early Sanskrit lexicon, lists eight synonyms of Ganesha: Vinayaka, Vighnarāja (equivalent to Vighnesha), Dvaimātura (one who has two mothers), Gaṇādhipa (equivalent to Ganapati and Ganesha), Ekadanta (one who has one tusk), Heramba, Lambodara (one who has a pot belly, or, literally, one who has a hanging belly), and Gajanana (gajānana); having the face of an elephant.
Vinayaka (विनायक; vināyaka) is a common name for Ganesha that appears in the Purāṇas and in Buddhist Tantras. This name is reflected in the naming of the eight famous Ganesha temples in Maharashtra known as the Ashtavinayak (Marathi: अष्टविनायक, aṣṭavināyaka).The names Vighnesha (विघ्नेश; vighneśa) and Vighneshvara (विघ्नेश्वर; vighneśvara) (Lord of Obstacles) refers to his primary function in Hinduism as the master and remover of obstacles (vighna).