御食い初め[okuizome] weaning ceremony
為初め[shisome] outset
為初める[shisomeru] to begin to do
仮初[karisome] temporary
業界初[gyoukaihatsu] the industry's first ...

月初め[tsukihajime] beginning of month
最初[saisho] beginning
初めに[hajimeni] to begin with (used as an introduction)
初めは[hajimeha] at first
手初めに[tehajimeni] at first

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)