一部 (いちぶ) Japanese meaning

一部 (いちぶ) Japanese meaning | Kotomora

Grammar

部ぶ分ぶんN3sense 1
部分 is the general word for 'a part' of something, while 一部 more often marks that part as a distinct subset or fraction of the whole.
一いっ冊さつ sense 2
一冊 is the ordinary counter for 'one book', while 一部 is used specifically for one complete copy or set of a publication, often in formal or publishing contexts.
一いっ端たん
一部 is the common, neutral word for 'a portion' of something, while 一端 is more literary and often refers to a small or peripheral part.

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一ひと握にぎりN1
一部 simply means 'a part' or 'a portion' without implying scarcity, whereas 一握り stresses that the amount is very small.
一いち部ぶ分ぶんN1
一部 often refers abstractly to 'some part' (e.g. 一部の人は), whereas 一部分 is more concrete and physical, like a piece of an object or text.

全ぜん部ぶN5sense 1
全部 means 'all, the whole thing', the direct opposite of 一部, which means only 'a part' of something.
全ぜんN3
一部 means 'a part' or 'some of', the direct opposite of 全 which means 'all of' or 'the whole of'.
全ぜん線せん
一部 means only a part or section of a line or network, whereas 全線 means the entire line or all lines without exception.

一いち分ぶ
一分 (いちぶ) denotes a fraction like one tenth or one percent, while the homophone 一部 (いちぶ) means 'a part' or 'one copy' of something, an unrelated sense.

一いち部ぶUsage100%
Standard kanji spelling; high-frequency in news and general use.
１いち部ぶ
Numeric variant sometimes seen in lists or headings; less common in running text.

Compound of 一 (one) and 部 (part, section, copy). The reading いちぶ follows standard on'yomi.