医博[ihaku] doctor of medicine
該博[gaihaku] profundity
該博な知識[gaihakunachishiki] profound knowledge
商学博士[shougakuhakushi] Doctor of Commercial Science
大英博物館[daieihakubutsukan] British Museum

賭博[tobaku] gambling
博愛[hakuai] charity
博愛家[hakuaika] philanthropist
博愛主義[hakuaishugi] philanthropism
博引傍証[hakuinboushou] citing copious references

医学技術士[igakugijutsushi] medical technician
医学士[igakushi] Bachelor of Medicine
一言居士[ichigenkoji] person who is ready to comment on every subject
一士[isshi] private first-class (JSDF)
隠士[inshi] hermit

宇宙飛行士[uchuuhikoushi] astronaut
運転士[untenshi] driver
栄養士[eiyoushi] nutritionist
下士[kashi] noncommissioned officer
下士官[kashikan] non-commissioned officer

おけさ節[okesabushi] style of Japanese folk song associated with Niigata Prefecture
双節棍[nunchaku] nunchaku (two linked fighting sticks)
一音節[ichionsetsu] monosyllable
一節切り[hitoyogiri] one-jointed bamboo musical instrument
音節[onsetsu] syllable

鰹節[katsubushi] katsuobushi
環節[kansetsu] segment (of worm)
関節[kansetsu] joints (knee joint, elbow joint, etc.)
関節リューマチ[kansetsuryuumachi] rheumatoid arthritis
関節炎[kansetsuen] arthritis