Technology
Wasei-eigo in the Technology category — 4 words that look English but mean something completely different in Japanese.
エアコン
eakon
An air conditioning unit ≠ air conditioner
ホームページ
hōmupēji
An entire website (a company's or person's whole site) ≠ home page
ノートパソコン
nōto pasokon
A laptop computer (portable personal computer) ≠ laptop
リモコン
rimokon
A remote control (for TV, AC, etc.) ≠ remote control