A Haiku poem is a specific type of traditional Japanese poetry with three lines. Haiku poems typically focus on nature and convey a sense of stillness, simplicity, and beauty. In contrast, a regular poem can be written in any form, meter, or length and can cover various topics and themes. The lines do not need to rhyme. The main difference between a Haiku poem and a regular poem is the strict structure and syllable count of a Haiku, which gives it a distinct form and tone.