御猪口[ochoko] small cup
片口鰯[katakuchiiwashi] Japanese anchovy (Engraulis japonica)
白口[shiroguchi] white croaker (Pennahia argentata)
悪たれ口[akutareguchi] abuse
悪口雑言[akkouzougon] all kinds of malicious gossip

異口同音[ikudouon] in concert
異口同音に[ikudouonni] in one voice
ひと口[hitokuchi] mouthful
一口商い[hitokuchiakinai] an immediate definite deal
一口同音[ikkudouon] reading in unison

一弦琴[ichigenkin] single-stringed Japanese zither
琴線[kinsen] heartstrings
三角琴[sankakugoto] trigon (a musical instrument)
手風琴[tefuukin] accordion
心の琴線[kokoronokinsen] heartstrings

たて琴[tategoto] harp
風琴[fuukin] organ
木琴[mokkin] xylophone
提琴[teikin] tiqin (2 or 4-stringed Chinese instrument played with a bow)

琵琶[biwa] biwa (Japanese lute)
琵琶行[biwakou] biwa song
琵琶湖[biwako] Lake Biwa
琵琶笛[biyabon] Edo-period mouth harp (with a hairpin-like frame and a long straight tongue)
琵琶鱒[biwamasu] biwa trout (Oncorhynchus masou rhodurus)

薩摩琵琶[satsumabiwa] Satsuma biwa (or its music)
琵琶の琴[biwanokoto] biwa (4 or 5-stringed Oriental lute)
平家琵琶[heikebiwa] chanting of the Heike Monogatari to biwa accompaniment
琵琶湖大鯰[biwakooonamazu] Lake Biwa catfish (Silurus biwaensis)
琵琶鰉[biwahigai] Biwa oily gudgeon (Sarcocheilichthys variegatus microoculus)

琵琶[biwa] biwa (Japanese lute)
琵琶行[biwakou] biwa song
琵琶湖[biwako] Lake Biwa
琵琶笛[biyabon] Edo-period mouth harp (with a hairpin-like frame and a long straight tongue)
琵琶鱒[biwamasu] biwa trout (Oncorhynchus masou rhodurus)

薩摩琵琶[satsumabiwa] Satsuma biwa (or its music)
琵琶の琴[biwanokoto] biwa (4 or 5-stringed Oriental lute)
平家琵琶[heikebiwa] chanting of the Heike Monogatari to biwa accompaniment
琵琶湖大鯰[biwakooonamazu] Lake Biwa catfish (Silurus biwaensis)
琵琶鰉[biwahigai] Biwa oily gudgeon (Sarcocheilichthys variegatus microoculus)

葦笛[ashibue] reed pipe
横笛[yokobue] transverse flute (e.g. a fife)
角笛[tsunobue] horn
汽笛[kiteki] steam whistle
響笛[kyouteki] vibrating pipe

警笛[keiteki] horn
鼓笛[koteki] drum and fife
鼓笛隊[kotekitai] drum and fife band
口笛[kuchibue] whistle
喉笛[nodobue] windpipe