speak and talk

[Unregistered]

I can not figure out exactly the differences between these two words and in wich context can I use them. For sure I'm missing a clue in their grammar or meanning characteristics. Can you help me with that?
Thanks a lot

 

[srcnsnmz]

"talk" action isn't appropriate when you say something -yourself-!!!
but "speak" is suitable for a similar condition.

 

[Anglika]

See here: https://www.usingenglish.com/forum/ask-teacher/56474-say-speak-talk-tell.html#post239095