“AS” and “LIKE” are commonly used words in English for comparisons, but they have specific grammatical roles and nuances that distinguish them.

1. ‘As’:

– Introduction of Role or Function: “As” is often used to introduce a role or function performed by someone or something.

– Example: She worked as a teacher.

– Comparison of Actions or Manner: “As” is used to draw a comparison between the actions or manner in which something is done.

– Example: He eats as if he hasn’t had food for days.

2. ‘Like’:

– Comparison of Similarities or Characteristics: “Like” is primarily used to compare similarities between two things or to describe similar characteristics.

– Example: She sings like an angel.

– Resemblance: “Like” is also used to show resemblance or to point out that something is similar to another.

– Example: She looks like her mother.

Both words can indeed change meaning based on the sentence structure and context. While “as” tends to introduce roles or comparisons related to actions, “like” generally focuses on qualities or similarities between two elements.

In conclusion, “as” is typically used to indicate roles or actions, while “like” emphasizes similarities or characteristics. Understanding the context and intended comparison will help in choosing the appropriate word for comparison in a sentence.