Quiz

Find a word that links "Acute" and "Obtuse" and call it A.I think is angle.
Find a word that links "Corroboration" and "verification"and call it B. I think is Confirmation.Find a word that links "Full House" and "Flush" and call it C.I think is hands.Therefore wondering if the anyone could confirm the answer,to be given in a few words, is card or poker terms.