Takoyaki is a ball-shaped Japanese snack made of a wheat flour-based batter and cooked in a special molded pan.
It is typically filled with minced or diced octopus (tako), tempura scraps (tenkasu), pickled ginger, and green onion
Okonomiyaki is a Japanese savory pancake containing a variety of ingredients.
The name is derived from the word okonomi, meaning “how you like” or “what you like”, and yaki meaning “grill”.
AloJapan.com