‘As’ and ‘like’ can be very confusing at times. The difference and the similarities between them can be studied by differentiating them in two figures of speech:

 

  ‘As’ and ‘like’ as prepositions:


 As – It refers to the way someone or something works or functions. It can also refer to someone’s  appearance. For example:

 She works as a teacher.

 She looked beautiful dressed as a fairy.

  

 Like – It means ‘similar to’. It is used to infer comparisons. For example:

 She looks a lot like her mother.

 I have also got the same hair cut like you.

  

 

  ‘As’ and ‘like’ as conjunctions:


 As – It means ‘in the same way that’. For example:

 The weather is very humid, as it is always in any coastal place.

 When in Rome, do as the Romans do.

  

 Like – In terms of conjunctions, ‘like’ is used exactly like ‘as’ in informal or American English. For example:

 No one else can ever love him like I do.

 I hope I don’t get sick in the trip again, like I was in my last trip.