"put" vs "say"

[email protected] (Parrot Raiser) Sun, 21 Oct 2018 12:29:18 -0400
Newsgroups perl.perl6.language
Message-ID <CACwLAp-9GQPmK2ejwcDV5rWCuLbUKeh2ihJfn6RUfhi_BnV_LA@mail.gmail.com>
"put" and "say" seem to be redundant, but I'm sure there's a good
reason for having 2 output commands.

Would anyone care to comment on how they differ and why, or point to
an explanation?