A notary is a person authorised to perform acts in legal affairs, in particular witnessing signatures on documents. The form that the notarial profession takes varies with local legal systems.
A notary at work (painting by German artist Max Volkhart)
Entrance to notary's office in Vigo, Spain
"Der Notar" ("The Notary"), Copper engraving from 1698 book by Christoph Weigel the Elder
An "advocate" is a professional in the field of law. Different countries and legal systems use the term with somewhat differing meanings. The broad equivalent in many English law–based jurisdictions could be a barrister or a solicitor. However, in Scottish, Manx, South African, Italian, French, Spanish, Portuguese, Scandinavian, Polish, Israeli, South Asian and South American jurisdictions, "advocate" indicates a lawyer of superior classification.
19th-century painting of Advocates, by French artist Honoré Daumier
A 16th-century advocate
Advocate's office in Rajasthan