VAMANA means dwarf
Probably because Vaishnavas only worship Vishnu & his avatars, & Ganesh is not one of his avatars.
Rama is the seventh avatar of Lord Vishnu and Sita is the consort of Lord Rama, the seventh avatar (incarnation) of Lord Vishnu
The scriptures speak of the 10 Avatars of Vishnu - different incarnations that take the form of divine intervention provided by Vishnu during the various stages of human evolution. The "dasavatara" (ten avatars) is meant to re-establish dharma or righteousness and destroy tyranny and injustice on earth. The ten Avatars are: 1. Matsya (the fish) 2. Koorma (the tortoise) 3. Varaha (the boar) 4. Narasimha (the human-lion) 5. Vamana (the dwarf) 6. Parasurama (the angry man, Rama with an axe) 7. Lord Rama (the perfect man, king of Ayodha) 8. Lord Krishna (the divine statesman) 9. Balarama (elder brother of Krishna) 10. Kalki (the mighty worrior) The last Avatar is yet to appear, and in many versions of the mythology, the ninth incarnation is mentioned as Lord Buddha.
Different lists of Vishnu's avatars appear in different texts, including: the dasavatara from the Garuda Purana; lists of twenty-two, twenty-three, and sixteen avatars in the Bhagavata Purana; thirty-nine avatars in the Ahirbudhnya saṃhitā; the dasavatara again in Agni Purana; the first eight of the dasavatara in Padma Purana.
Vishnu, the head god in Hinduism, has 10 different avatars or incarnations. they are: 1. Matsya the fish 2. Kachyup/Kurma the tortoise 3. Varaha the boar 4. Narasimna the half-lion half-man 5. Vamana the dwarf 6. Parashurama 7. Rama 8. Krishna 9. Balarama or Buddha (there is controversy concerning which is the 9th incarnation) 10. Kalki (Note: Kalki has not been born yet)
Actually there are 9 avatars of Vishnu; Matsya the fish Kurma the tortoise Varaha the boar Narashimha the man-lion Vamana the dwarf Rama the prince Krishna the ideal human Buddha the yogi Kalki the warrior (he has not come yet but is predicted to return on a white horse at the end of time)
It is believed that Maha Vishnu would have ten such Avatars (forms), the most popular being Rama and Krishna. The full list of ten Avatars is as follows: 1. The fish Matsya 2. The turtle Kurma 3. The boar Varaha 4. The man-lion Narasimha 5. The dwarf Vamana 6. The warrior-priest Parashurama 7. The prince Rama 8. The cowherd Krishna 9. The sage Buddha-Mayamoha 10. The horseman Kalki
Vishnu is one of the major hindu gods. He is known to have 10 forms (avatars). Vishnu is worshipped as a god, and so are Krishna and Rama, who are worshipped as seperate gods even though they are incarnatins of vishnu.
Vaishnavas are a category of Hindus who worship lord Vishnu. Many strict vaishnavas won't even enter a lord shiva temple. They will only worship the avatars of Vishnu
Vamana (dwarf) avatar was the fifth avatar of Lord Vishnu.
the 10 avatars of lord vishnu are matsya Kurma Vahara Narsimha Vamana Parashurama Rama Krishna Buddha Kalki all of these have appeared on earth exept for kalki (the tenth avatar)
Ramayana relates to the time in Tretayuga and Mahabharata relates to time of Dwaparayuga. Tretayuga is before Dwaparayuga. Rama and Krishna are incarnations of Lord Vishnu respectively in Tretayuga and Dwaparayuga