lớp

lớp
noun
  1. a layer (single thickness of some material covering a surface)
  2. grade; school year
  3. (education) a class (group of students in a regularly scheduled meeting with a teacher)
  4. (taxonomy) a class
  5. (theater) an act
  6. (literary) a generation

vỏ

vỏ
noun
  1. cover, bark, shell, sheath, husk, skin, peel, pot, crust
  2. tyre, tire