What is the difference between As and Like? How to distinguish between As and Like? Let's see the following examples.
✗ Jack talks like his brother does.
✓ Jack talks as his brother does.
✗ As other students, She is very busy.
✓ Like other students, She is very busy.
As: (preposition) As + adjectives, adverbs + as, (conjunction) introduce dependent clauses. Do not use as before a noun or pronoun in comparisons.
Like: is a preposition is followed by a noun or pronoun.