一意専心[ichiisenshin] single-mindedly
高専[kousen] technical college
歯内療法専門医[shinairyouhousenmoni] endodontist
耳鼻咽喉専門医[jibiinkousenmoni] ear, nose and throat specialist
住専[juusen] housing-loan corporation

専ら[moppara] wholly
専横[senou] arbitrariness
専科[senka] specialized course
専業[sengyou] special occupation
専攻[senkou] major subject

亜科[aka] subfamily
医科[ika] medical science
医科大学[ikadaigaku] medical school
家庭科[kateika] home economics
科名[kamei] family name

科する[kasuru] to inflict
科学[kagaku] science
科学院[kagakuin] science institute
科学技術[kagakugijutsu] science and technology