The verbs speak and talk both generally mean 'say words', but there are some small differences in how they are used. Speak is more formal than ... the speaker does not know you very well. – this is in a formal setting, such as work. – what the person has to say is important/serious. I need to talk to you. Informal. read more
The difference between speaking and talking is a difference in transitivity. Talking can only be used transitively, speaking goes both ways. You can say: I spoke but nobody listened. read more
talk: speak in order to give information or express ideas or feelings; converse or communicate by spoken words. Obviously, the two words are synonyms. Speak can sometimes sound a little more formal than talk but there really is no "definitive difference" between the two. read more
Talk vs Speak There are many words in the English language that are synonymous and are usually used interchangeably. Two of these are the words "talk" and "speak." Both words pertain to the art of communicating our ideas, to verbalize words, or to express sounds. read more