ペアpea

1. nounpair; set of two
2. nounpair-oared boat
3. noun, card gamespair; two of a kind

• Synonym一対いっついWrittenWritten/formal word for two things matched as a set, mostly objects like 「一対の花瓶」; 「ペア」 is the everyday choice and can also refer to people.
• Synonym双そうWrittenWritten/formal Sino-Japanese word, mostly a counter or prefix for paired things, as in 「一双の屏風」; rarely used alone — in daily speech say 「ペア」 or 「一対」.
• SynonymコンビNeutralLoanword for a duo or team of partners, as in 「名コンビ」「漫才コンビ」; stresses working together, while 「ペア」 can also mean things that come in pairs.
• Synonym二人ふたりNeutralThe most general word for two people; basically counts two, but can also mean a couple in a relationship, as in 「二人の仲」; 「ペア」 stresses being paired as a set.
• Related夫婦ふうふNeutralRead 「めおと」: a married couple, also a prefix for a large-and-small pair like 「夫婦茶碗」; 「ペア」 just means two as a set, with no size contrast.
• RelatedデュオNeutralLoanword for a duet or two-person act, used mostly in music; 「ペア」 is not restricted to any field.
• RelatedアベックNeutralLoanword for a man and woman out together, i.e. a couple; now dated, with 「カップル」 the usual modern choice; 「ペア」 is not limited to man-woman pairs.
• RelatedカップルNeutralLoanword mainly for romantic or married couples, as in 「カップル席」; 「ペア」 carries no romantic nuance and covers any two as a set.
• RelatedつがいNeutralMostly a mated male-and-female animal pair, as in 「つがいの鳥」; can also mean two things matched as a set, while 「ペア」 broadly covers any two as a group.
• Related二人組ふたりぐみNeutralA two-person group, common in news reports like 「二人組の強盗」; 「ペア」 also covers things and stresses being matched as a pair.
• Related好一対こういっついWrittenWritten/formal word praising two people or things as very well matched, as in 「好一対の夫婦」; stresses suitability, while 「ペア」 only says two form a set.
• Antonym単独たんどくWrittenAntonym: alone or single, as in 「単独行動」「単独で」; written/formal in tone, and the opposite of 「ペア」 as a two-person set.
• AntonymひとりNeutralAntonym: one person or going alone, as in 「一人で行く」; the opposite of 「ペア」, which is two people formed into a set.

Use 「ペア」 for two as a set or two people teaming up, as in 「ペアを組む」. For romantic couples say 「カップル」, for working partners 「コンビ」, and for paired objects 「一対」. The opposites are 「単独」 and 「一人」.

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

1. 二人ふたりまたは二ふたつのもので対たいになるもの。