What is one differs between romanesque basilicas and gothic cathedrals?

Gothic architecture had pointed arches in roof while Romanesque architecture had round arches. Gothic Architecture has groin vaulted cathedrals while Romanesque has mostly barrel vaults and some groin vaults. A groin vault is formed by two barrel vaults intersecting at right angles.

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artists need to create a realistic interpretation so that people in general can relate to the artwork. for a common people, an artist's impression gets increased only if he can create something which would look realistic. an abstract is difficult for a common people to understand whereas if a person can draw a girl with simple pencil sketch and if that looks like a real figure then the latter will be praised more than the former.