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

営林署[eirinsho] forest service field office
警察署[keisatsusho] police station
公署[kousho] government office
署名[shomei] signature
署名式[shomeishiki] signing ceremony (for a law, treaty, etc.)

消防署[shoubousho] fire station
税務署[zeimusho] tax office
代署[daisho] sign for another
副署[fukusho] countersignature
分署[bunsho] substation