There are several spells that can hide an area in the Harry Potter universe. These include:

• Arania Exumi: This spell is used to clear away cobwebs.
• Repello Muggleton: This spell is used to repel Muggles.
• Cave Inimicum: This spell is used to protect an area from enemies.
• Amplifying Charm: This charm is used to amplify the effects of another spell.
• Impervius Charm: This charm is used to repel water.
• Concealment Charm: This charm is used to conceal things from view and to obfuscate inherent magical properties of objects.
• Fidelius Charm: This is a very powerful spell used to hide things or places, or to conceal secrets. The spell is described as “(a)n immensely complex spell” .
• Femina Commeabilitum: This spell can be used to conceal a place.

It is important to note that some of these spells have specific uses and may not be suitable for hiding an area in all situations.