parley

nouns

a negotiation between enemies
is a type of (narrower)
a discussion intended to produce an agreement
"the buyout negotiation lasted several days"; "they disagreed but kept an open dialogue"; "talks between Israelis and Palestinians"

verbs

discuss, as between enemies
is a type of (narrower)
confer with another in order to come to terms or reach an agreement
"The parties negociated all night"