Chinese poetry has a 3,000+ year history. The Tang Dynasty (618-907) is considered the golden age, with poets like 李白 and 杜甫 still widely read and memorized by schoolchildren today.
usage
诗歌 is the general/formal term for poetry as a genre. 诗 alone means a specific poem and is more commonly used in daily speech: 写诗 (write a poem), 念诗 (recite a poem).