Shell
Shellfish, Clam
noun
The kanji and the word are exactly the same. That means they share meanings as well.
かい
The reading for this word is the same as the one you learned with the kanji, meaning you should be able to read this already.
かえりに、貝をかってきましょうか。
Shall I buy clams on my way back?
貝るいやこうかくるいをたべると、からだがかゆくなります。
My body gets itchy when I eat shellfish.
私は、牡蠣の貝殻の中に置かれていることに気付かずに、婚約指輪を飲み込んでしまった。
I swallowed my engagement ring because I hadn’t noticed he put it in the oyster shell.