This is the 4098th most frequent Japanese word.
ボタ
"ボタ" typically refers to coal waste or slag in mining contexts.
In this sentence, 'ボタ' refers to 'petal', showing its use as a noun.
ボタは花の一部です。
A petal is part of a flower.
Here, 'ボタ' again indicates 'petals', but the sentence demonstrates its functional application.
ボタを使って装飾をします。
We use petals for decorations.
In this example, 'ボタ' is used in possessive form, describing an attribute of the petals.