専門【せんもん】
speciality, specialty, subject of study, expert, area of expertise
専務【せんむ】
special duty, being in sole charge of a duty, senior managing director, executive director
専門家【せんもんか】
specialist, expert, professional, authority, pundit
専攻【せんこう】
major subject, special study
専用【せんよう】
(one's) exclusive use, private use, personal use, dedicated use, use for a particular purpose, exclusive use (of particular products), using only (e.g. a certain brand), using solely
専任【せんにん】
full-time service
専属【せんぞく】
exclusive, attached to, specialist
専売【せんばい】
monopoly, monopolization, exclusive sales rights
専制【せんせい】
despotism, autocracy
専ら【もっぱら】
wholly, solely, entirely, exclusively, devotedly, fixedly, principally, mostly, chiefly, mainly
専念【せんねん】
absorption, giving undivided attention, devoting oneself (to)
専横【せんおう】
arbitrariness, despotism, high-handedness, tyranny