responsa

English has respond

respond  vb  [MF respondre, fr. L respond-re to promise in return,
    answer, fr. re- + spond-re to promise ¦ more at SPOUSE] vi

response  n  [ME & L; ME respounse, fr. MF respons, fr. L responsum reply,
          fr. neut. of responsus, pp. of respond-re] (14c)
1        : an act of responding
2        : something constituting a reply or a reaction: as
a        : a verse, phrase, or word sung or said by the people or choir
            after or in reply to the officiant in a liturgical service
b        : the activity or inhibition of previous activity of an organism
           or any of its parts resulting from stimulation
c        : the output of a transducer or detecting device resulting from
           a given input

Assi, in interlingua "responder" = anglese "to answer (=to reply).

Stan