The Japanese manga/anime fandom uses a wide variety of terms to describe their favorite anime characters or their favorite storytelling conventions, and some have a clearer definition than others. Most anime fans know exactly what a tsundere is, for example, and anyone can spot prime waifu/husbando material from a mile away. However, the term moe is more nebulous and highly subjective, which may confuse more casual anime fans.
Source：https://www.cbr.com/what-is-moe-in-anime/
