N4
各
かく
Each, Every, Respective, Various
ここは正月になると日本各地からの観光客でいっぱいになる。
When it becomes New Year's, this place is filled with tourists from each and every place in Japan.
Explanation
「各」 goes before a noun, is read 「かく」, and means 'each, every'. It is used in official documents, news and business.
Common words: 「各地」 (every region), 「各国」 (each country, read 「かっこく」), 「各社」, 「各人」, 「各自」.
Mixed up with
「各」 is about every individual in a group: 各地, 各国, 各校. 「毎」 is about repeating in time: 毎日, 毎月, 毎週.
「各」 is very formal. 「それぞれの+noun」 is more everyday and fits speech and writing: 「それぞれの考え」 (their respective ideas).