Decir, aplicado en:
- Say something (hello, goodbye)
- Say your name
- Say a prayer
Tell:
Decir, aplicado en
- Tell your name
- Tell a secret
- Tell a joke
- Tell a story
- Tell a confession
Speak:
Hablar, en los contextos:
- Speak a language
- Speak louder/lower, faster/slower
Talk:
Hablar, en los contextos
- Talk about a topic
- Talk to someone
