Meaning of technique on Cambridge Dictionary
a way of doing an activity that needs skill
Meaning of skill on Cambridge Dictionary
an ability to do an activity or job well, especially because you have practiced it
Googling "common English techniques" gives just 10 hits while googling "common English skills" gives 56,700 hits, which indicates the latter is more common than the former, why is that?
question 1
In the following sentence, which one should I use?
Intonation is an useful English technique/skill. ESL learners better to master it.
question 2
suppose skill is the answer, should I call intonation "a skill" or "part of speaking skill"
Intonation is an useful skill...
Intonation is a useful part of speaking skill...