Words
Chinese characters
 Grade-1 Grade-2 Grade-3 Grade-4 Grade-5 Grade-6

date & time
 date holiday time daily

number & unit
 number count age unit

symbol & position
 symbol letter colors position

place
 province Tokyo city town

Name
 name ranking TOP200 other names

animals & plants
 animals plants

idioms
 4 characters

Business
 IT words1 IT words2