黒樫[kurogashi] black oak
赤樫[akagashi] Japanese evergreen oak (Quercus acuta)
コルク樫[korukugashi] cork oak
白樫[shirakashi] quercus myrsinifolia
樫粉[kashigo] oak flour (esp. as animal food)

姥目樫[ubamegashi] ubame oak (Quercus phillyraeoides)
今芽樫[imamegashi] ubame oak (Quercus phillyraeoides)
粗樫[arakashi] ring-cupped oak (Quercus glauca)
衝羽根樫[tsukubanegashi] Quercus sessilifolia (species of oak)

鰹節[katsubushi] katsuobushi
真魚鰹[managatsuo] butterfish (any fish of family Stromateidae, esp. species Pampus punctatissimus)
鰹木[katsuogi] log on the roof of a shrine set perpendicular to the ridgepole
花鰹[hanagatsuo] dried bonito shavings
鰹の烏帽子[katsuonoeboshi] Portuguese man-of-war (Physalia physalis)

鰹節虫[katsuobushimushi] dermestid beetle
猫に鰹節[nekonikatsuobushi] temptation one can't resist
初鰹[hatsugatsuo] the first bonito of the season
歯鰹[hagatsuo] striped bonito (Sarda orientalis)

堅魚[katsuo] skipjack tuna
堅い[katai] hard
堅果[kenka] nut
堅苦しい[katakurushii] formal
堅固[kengo] solid

堅持[kenji] holding on to
堅城[kenjou] strong fortress
堅陣[kenjin] stronghold
堅調[kenchou] bullish
堅忍[kennin] perseverance

邪慳[jaken] cruelty

突っ慳貪[tsukkendon] blunt

鏗然[kouzen] emitting a shrill sound (musical instrument, metal, stone)
鏗々[koukou] the ringing out of bells or chimes

鏗鏘[kousou] the resoudning sound of bells, musical instruments, stones being struck, etc.