8. What is the difference between TESOL and TEFL?

Basically they are the same thing. Teaching English to Speakers of Other Languages (TESOL) is an umbrella term that includes Teaching English as a Second Language (TESL) and Teaching English as a Foreign Language (TEFL). TESOL is an acronym that is used more by US-based programs and TEFL more by British programs. Most job postings will include one of these terms.