Noise-cancelling headphones. Noise-cancelling headphones are headphones that reduce unwanted ambient sounds using active noise control. This is distinct from passive headphones which, if they reduce ambient sounds at all, use techniques such as soundproofing.
English to Speakers of Other Languages (ESOL): The term ESOL is generally used when describing programs outside of a PK-12 setting that are designed for ELLs who seek proficiency in social and academic language; ESOL programs, which may also be referred to as English as a Second Language programs, generally teach basic grammar, vocabulary and ...
ESL - English as a Second Language is an educational approach in which. English language learners are instructed in the use of the English language. ESOL - English for Speakers of Other Languages. ELL - English Language Learner - Students whose first language is not English. and who are in the process of learning English.