Kyūjitai form of 労働: perform work, labor

motive; that which sets one into motion

(mathematics) concentricity / support for someone

be of one heart and mind with someone; stand by someone and support and cooperate with them

public road

hutong

adjectival noun (abbreviation of 形容動詞)

(slang) Abbreviation of 童貞 (dōtei).

(physics) ballistics

(calculus) derived function - of a function, another function, the value of which for any value of the independent variable is the instantaneous rate of change of the given function at that value of the independent variable.