accuse, charge / sue, bring a case against

accusation, charge, lawsuit

opinion, assertion, contention

maintain, argue, claim

falsehood / innocence

false, untrue / innocent

to deny, negate

denial, negation

oneself / first-person pronoun: I, me (often shows the speaker's lower position in a hierarchy than the addressee) / (Kansai) you

he / distal demonstrative, something far off removed from both speaker and listener: that / boyfriend