蓋
ふた · futa · JLPT N2 · noun
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🫙 蓋 (futa) = the lid that covers a pot; ふた sounds like 'futa', a lid that 'covers' the top
The kanji 蓋 shows a cover (盖) over a container. Its reading ふた is one word for lid, cover, and cap, so think of the lid as the thing that covers the opening.