本の[honno] mere
異本[ihon] different edition
一坪本社[hitotsubohonsha] small company headquarters located in Tokyo simply for name value
一本[ippon] one long cylindrical thing
一本気[ippongi] single-minded (esp. personality or person)

一本橋[ipponbashi] (a) log bridge
一本建て[ippondate] (a) single standard
一本松[ipponmatsu] solitary pine tree
一本杉[ipponsugi] (a) solitary cryptomeria tree
一本槍[ipponyari] guiding principle

ミサイル駆逐艦[misairukuchikukan] (guided) missile destroyer
伊艦[ikan] Italian warship
仮装巡洋艦[kasoujunyoukan] merchant cruiser
艦橋[kankyou] bridge (e.g. on a warship)
艦載機[kansaiki] ship-borne plane

艦上[kanjou] aboard a warship
艦船[kansen] (ocean) vessels
艦隊[kantai] (naval) fleet
艦長[kanchou] captain (of a warship)