かい

shell, shellfish

JLPT N3

Character Breakdown

Meaning and Usage

The word 貝 (かい) primarily refers to shells or shellfish. It can mean the hard outer shell of sea creatures or the creatures themselves, such as clams, oysters, and mussels.

Common Contexts

You will often see 貝 used when talking about collecting shells on the beach, cooking seafood dishes, or crafting with shells. It is a common noun in everyday conversation, especially related to nature, food, and crafts.

Collocations and Patterns

  • 貝を拾う (かいをひろう): to pick up shells, often used when talking about beachcombing.
  • 新鮮な貝 (しんせんなかい): fresh shellfish, common in cooking contexts.
  • 貝殻 (かいがら): shell (the empty shell), often used when referring to shells collected as objects.

Register and Nuance

貝 is a neutral word suitable for casual and formal contexts. When referring to edible shellfish, it can be part of more specific compound words or names of species.

Common Mistakes

Learners sometimes confuse 貝 (shell/shellfish) with 貝殻 (shell only). Remember 貝 can mean the animal inside as well as the shell, while 貝殻 refers only to the empty shell.

Example Sentences

かいがんでたくさんのかいをひろいました。

I picked up a lot of shells on the beach.

このりょうりにはしんせんなかいがつかわれています。

This dish uses fresh shellfish.

かいがらをあつめてアクセサリーをつくりました。

I collected shells and made accessories.