A poet is someone who writes poetry. Poetry can be written in any language by a poet.
Sappho was an Ancient Greek poet. She lived in Lesbos, Greece. She was famous for writing lyric love poems to women. She wrote in the Ancient Greek language.
Famous English poets are William Shakespeare, Alexander Pope, William Wordsworth, William Blake, John Keats, and Percy Shelley. They wrote in the English language. Their poetry comes in different styles and forms. Often their poetry is lyrical and rhymes.