otaku vs nerd

im sick of people saying im otaku. I insist i am just a anime game nerd but they insist im otaku.help me prove this to them.

what are the differences between otaku and nerd when both are into anime and games. please explain why you think soo.

Look otaku is a Japanese words that means a person who likes anime manga(comics) or video games related to anime such as dating sims or fighting games like street fighters.