ease / simplicity / lightness, brevity

easy / simple, uncomplicated / brief, light, short

(chiefly in mathematics, physics) for simplicity; for the sake of simplicity

lens (object focusing or defocusing the light passing through it)

camera / video camera / movie camera / surveillance camera

和司, 和志, 和史: a male given name

attached, fixed / external, external medicine / false, false mustache, sham

one's favorite, accustomed

bill / account, credit

Short for つけまつげ (tsukematsuge).