fungus: [16] Fungus was introduced into English in the early 16th century as a learned and more all-embracing alternative to mushroom. It was borrowed from Latin fungus, which probably came from Greek sphóngos ‘sponge’, source of English sponge. => sponge
fungus (n.)
1520s, "a mushroom," from Latin fungus "a mushroom, fungus;" used in English at first as a learned alternative to mushroom (funge was used in this sense late 14c.). The Latin word is believed to be cognate with (or derived from) Greek sphongos, the Attic form of spongos "sponge" (see sponge (n.)). "Probably a loanword from a non-IE language, borrowed independently into Greek, Latin and Armenian in a form *sphong- ...." [de Vaan]
例文
1. If you have a tree stump，check it for fungus .
切り株があれば、上に菌類があるかどうかをチェックしてください。
2.Mushrooms are a type of fungus .
キノコは真菌である。
3.So how do you kill a fungus without harming its host？
問題は、宿主を傷つけずに真菌だけを殺すにはどうすればいいのだろうか。
dd> ライフサイエンス-バイオテクノロジー製薬ワクチン
4.200,000 specimens of fungus are kept at the Komarov Botanical Institute.
20万部の菌類標本がコマロフ植物研究所に保存されている。
5.This fungus can just be detected by the unaided eye.