Definition of contends:
(v) :
(intransitive) To be in opposition; to contest; to dispute; to vie; to quarrel; to fight.
(v) :
(intransitive) To be in debate; to engage in discussion; to dispute; to argue.
(v) :
(intransitive) To struggle or exert oneself to obtain or retain possession of, or to defend.
(v) :
(intransitive) To believe (something is reasonable) and argue (for it); to advocate.
(v) :
To try to cope with a difficulty or problem. [with with]