noun
analogue; analogous word
Linguistics term for a word that is similar in meaning or function to another word, often used in comparative or historical linguistics.
英語の「brother」とドイツ語の「Bruder」は類同語と見なされる。
English 'brother' and German 'Bruder' are considered analogues.
類義語 is a near-synonym, whereas 類同語 is a broader term for analogous words, often used in cross-linguistic comparisons.
Compound of 類 (るい, 'kind, type') + 同 (どう, 'same') + 語 (ご, 'word'). The exact origin is uncertain; it is a technical term in linguistics.