Doubts FCE

I have some doubts about the differences between these words:

- however and nevertheless These words are very similar in meaning.  Both indicate that the following idea contradicts or contrasts with the previous idea. In American English, "however" is used much more commonly than "nevertheless."  I also feel that "nevertheless" is more emphatic (stronger) than "however."  

- plainly and clearly While these are usually interchangable, each word emphasizes a different quality. "Plainly" indicates that there are no details or elaborations hiding or confusing the thing/idea. "Clearly" has more of an implication of being in focus or precise. 

- vision and sight "Vision" is about the result of "seeing", "sight" is about the action of "seeing".  

A vision is something you can remember or communicate to someone else. It's like a thought or ideal. So we have sxpressions like, "she was a vision of beauty," or "he has a vision for the future." Of course, it's also related to the word "envision," which means to imagine something, usually with visial detail. 

A sight is something related to the action of "seeing," that is, something you do with your eyes.

You can "go sightseeing," which may sound redundant, but it means to go to famous places and see "the sights." In this case, "the sights" are things you can see that are representitive of a specific place.

You can have a "line of sight," which means there is nothing in between yourself and the thing that you see.  Or, something can be "in sight" which means that you can see it.  

This is not the same as "insight," which means to understand something clearly, usually better than other people. 

- review and criticism

"Review" is neutral as to the thing being reviewed.  It's fairly close to "evaluation." So you can have a good review which praises the qualities/actions of the person/place/thing. Or you can have a bad review which criticizes the faults/failures of the person/place/thing.

"Criticism" is always negative about the thing being criticized.  However, there is such a thing as "positive criticism." This is when something negative is pointed out with the goal of helping someone improve it. 


And I have doubts about the meaning of these words or expressions:

- felt like doing...?

The person was emotionally motivated to do something

- common sight
Something, someplace or someone that is often seen. Not unusual.

- people and anybody are singular nouns or plural?

"People" is a plural noun. "Person" is the singular form.

"Anybody" is a singular pronoun.

- what is the meaning of either at the end of the sentence

At the end of a sentence, "either" has the meaning of "additionally," or "too." But it's only used to add to a negative statement.  For example:

I don't like cabbage.  I dont' like broccolli, either.

Or in this exchange, Bob is showing that he agrees with Mary:

Mary: I don't like cabbage.

Bob: I don't like cabbage either.

----

Thanks!!