Clause – this term has two different meanings, depending of where it has got application:
1) Within the sphere of Contracts and Obligations Law, this legal term refers to a concrete and integral legal rule, invented by the parties and stipulated as a numbered part of signed contracts, being a part of their terms and conditions. The most common clauses in contracts are these related to establishing the subject of the contract, the rights and obligations of the parties, the price (if any) etc.
*Note that it is always advisable to get advice from lawyer about the clauses of a contract which you are about to sign.
2) In the Administrative and Parliamentary Law it refers to a part or section of a legal document like act of legislature, administrative order, etc.