専門|せんもんsenmon[0]heiban (flat)

1. nounspeciality; specialty; special subject of study; area of expertise; (one's) field; (one's) major
2. nounsole interest; single focus; concentrating exclusively on; doing exclusively; sticking to

• Related専業せんぎょうWrittenWritten/formal prose: one's principal occupation pursued exclusively, as in 「専業主婦」「専業農家」; it stresses doing that work alone, with no side job.
• Related専門職せんもんしょくNeutralA profession requiring specialized knowledge, such as doctor or lawyer. It points to the job itself, whereas 「専門」 points to the field of expertise.

Use 「専門」 for a field of specialization. For a professional occupation choose 「専門職」; for working exclusively at one occupation with no side job, 「専業」.

Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only

1. 専もっぱらその分野ぶんやだけに、深ふかく携たずさわっている仕事しごとや学問がくもん。
2. 一ひとつのことに専念せんねんすること。