What's the difference between crier and outcrier?

Crier

Definition:

(n.) One who cries; one who makes proclamation.
(n.) an officer who proclaims the orders or directions of a court, or who gives public notice by loud proclamation; as, a town-crier.

Example Sentences:

(1) Visiting town criers, before their competition outside the Bulls Head, walk by in ceremonial dress, carrying bells.
(2) Significant differences were seen between the two groups, 'the criers' group of pairs interacting less (P less than 0.01) and were less responsive to their partners (P less than 0.01); the most marked difference being the percentage of overtures made by the 'cryer' babies which were not responded to by their mothers (P = 0.001).
(3) Storytelling is important, whether it's a ruddy and robust town crier or Homer (I mean the Greek one but the other one counts too).
(4) Rather than endorsing strategies that target individuals, mothers suggested increasing the level of social control exerted by decision makers in their communities (the village chief could direct the town crier to announce the passing of each week to help parents keep track of time between immunizations) and increasing the level of social support by having a meeting to support the importance of completing the vaccination series and to organize mothers who go to the clinic to inform others in their neighborhoods about vaccination.
(5) Health workers and a traditional communication channel, the 'town-crier', also played significant roles.
(6) Some difficulties encountered were lack of financing for the program (cancelled in 1984), informing villages by local news criers, selecting candidates, and handling social conflicts.
(7) And that's the dilemma: press the panic button too early and you risk being labelled a wolf-crier.
(8) We probably all know a few pre-Games humbug-criers – shouting themselves hoarse in stadiums or rapt and sometimes in tears in front of the TV – who have looked like Scrooge on Christmas morning in the last few weeks.
(9) Mick Jagger's brother, Chris Jagger, and the Wells town crier, Len Sweales, are also appearing.