An altar is a sacred place, often inside a church or shrine, where religious ceremonies take place.
Buddhism is a religion that started in India somewhere between the 6th and 4th centuries BC. Buddhism was founded by a man called Siddhartha Gautama, or Buddha. Buddhists can be found mainly in south-east Asia in countries like China, Burma, Japan and Tibet. Buddhists believe that you can end the suffering of life by eliminating ignorance, craving, hatred, and reaching a higher level of understanding. Once you have embraced the ideals of the Buddhist religion, you will reach the highest state of happiness, nirvana.
A church is a special building where people go to pray to their God.
A cross is a shape made by crossing two straight lines. Crosses are often built out of two pieces of wood nailed together. The Christian cross usually seen on top of churches has the horizontal part of the cross much shorter than the vertical part.
A deity is a divine creature that is worshipped as part of a religion. Deities are usually ascribed special powers.
Heaven is a place where God and angels live, and is said to be where people who have led a good and righteous life go when they die.
In some religions such as Christianity, Hell is a place that people who have been bad during their lives are believed to go when they die.