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Is there a word for it? If you go to certain church, you will see some paintings done on walls a long time ago. Is there a word for it? I am thinking there might be a word for it since the look of a painting on wall greatly varies from those done on a canvas.

The word is mural, derived from Latin for wall. Wikipedia

(EDITED to correct mistakes and add dictionary definitions; thanks commenters.)

OED "A painting executed directly on to a wall or ceiling as part of a scheme of decoration."

Related words:

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  Frescoes are a kind painting defined by the freshness of the plaster while they're being painted, almost always on walls OED "A kind of painting executed in water-colour on a wall, ceiling, etc. of which the mortar or plaster is not quite dry, so that the colours sink in and become more durable."


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  Grafitti is writing or pictures, very usually on walls. OED "Art (Historical). A drawing or writing scratched on a wall or other surface; a scribbling on an ancient wall, as those at Pompeii and Rome." and also "In plural with singular agreement. Words or images marked (illegally) in a public place, esp. using aerosol paint."


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  Frieze OED "A band of painted or sculptured decoration."


• Murals are famous as political expression in Northern Ireland and many other places.

The Triumph of Death is both a fresco and a mural, from the well-known paintings at The Camposanto in Pisa. Wikipedia

The Water Lilies -- The Clouds, By Monet (wikipedia), is commonly called a mural, but is actually painted on canvas and mounted on the wall. Its museum, the Orangerie, describes it as a "frieze". (EDIT to correct my mistake, thanks commenters.)

A word that's often used is fresco, even for paintings which technically aren't frescoes such as the famous 'The Last Supper' by Leonardo Da Vinci. A better example is the Sistine Chapel, where the walls and ceiling are full of frescoes by Michelangelo:

By Michelangelo - Own work Antoine Taveneaux Taken on 14 June 2014, CC BY-SA 3.0, https://commons.wikimedia.org/w/index.php?curid=33930339

Fresco (plural frescos or frescoes) is a technique of mural painting executed upon freshly laid, or wet lime plaster. Water is used as the vehicle for the dry-powder pigment to merge with the plaster, and with the setting of the plaster, the painting becomes an integral part of the wall. The word fresco (Italian: affresco) is derived from the Italian adjective fresco meaning "fresh", and may thus be contrasted with fresco-secco or secco mural painting techniques, which are applied to dried plaster, to supplement painting in fresco. The fresco technique has been employed since antiquity and is closely associated with Italian Renaissance painting.