Common Words by Reading

ケン
95.4%
laboratory ②seminar room ③professor's office
training (esp. in-service)
research society ②study class (e.g. religious) ③seminar (e.g. presentation of research)
research project (e.g. at school)
society for the study of manga ②manga club
grinding ②refining (a skill, knowledge, etc.)
diligent study
material (data) for one's research
4.6%
to sharpen ②to wash (rice) ③to scour
to sharpen ②to wash (rice) ③to scour
knife grinder (person)
one who sharpens razors
sharpening (of knives, swords, etc.)
knife grinder (person)
knife sharpener
sharpening with a rough grindstone
tool sharpener (esp. knives)