A poem that consists of a three-part structure: a strophe, an antistrophe, and an epode - Pindaric ode. The strophe and the antistrophe have the same stanzaic and rhythmic pattern, with only the finale being different.
A ceremonious poem created by an ancient Greek poet who lived in the 5th century BC - also Pindaric ode. Pindar lived from 522 to 443 BC.
A rhymed ode that doesn't have a fixed number of lines per stanza - irregular ode. It doesn't have a prescribed rhyming pattern or stanzaic structure. It does rhyme, but not in a regular way.
A poem that doesn't follow any set structure and is open to experimentation - that is also irregular ode. As I already explained, it doesn't have to follow any rules.
Apart from these two types of odes, there is also the third, Horatian ode. It is divided into stanzas, but unlike Pindaric ode, they have the same length, meter, and rhyme.
