A lawyer is a person who practices law. The role of a lawyer varies greatly across different legal jurisdictions. A lawyer can be classified as an advocate, government lawyer, attorney, barrister, canon lawyer, civil law notary, counsel, counselor, solicitor, legal executive, or public servant — with each role having different functions and privileges. Working as a lawyer generally involves the practical application of abstract legal theories and knowledge to solve specific problems. Some lawyers also work primarily in advancing the interests of the law and legal profession.
Different legal jurisdictions have different requirements in the determination of who is recognized as a lawyer. As a result, the meaning of the term "lawyer" may vary from place to place.
Some jurisdictions have two types of lawyers, barrister and solicitors, while others fuse the two. A barrister (also known as an advocate or counselor in some jurisdictions) is a lawyer who typically specializes in arguing before courts, particularly in higher courts. A solicitor (or attorney) is a lawyer who is trained to prepare cases and give advice on legal subjects. Depending on jurisdiction, solicitors can also represent people in lower courts but do not ordinarily have rights of audience in higher courts. Both solicitors and barristers are trained in law. However, in jurisdictions where there is a split profession, only barristers are admitted as members of a bar association.
The distinction between barristers and solicitors originated in the English legal system, but many countries which have adopted English law have eliminated the distinction. Countries such as New Zealand, Canada (except for Quebec, which practices civil law), India, Pakistan, and the US have adopted a fused profession, where all lawyers have the privileges of both barristers and solicitors.
Some fused-profession jurisdictions use one term to describe lawyers generally. For example, US lawyers are typically referred to as "attorneys", while Indian and Pakistani lawyers are known as "advocates".