what's the difference among ability, capability and capacity? The meanings of ability, capability and capacity are pretty much the same, so are they interchangeable or used in different situations?

similar words to scenery, what's the difference? When I introduce some places to tourists which one sounds more natural to native speakers? scenery, tourist attraction, scenic spot, landscape landmark what's the difference among these words?

can you explain the difference between "on my mind" and " in my mind"? I heard both "on my mind" and in my mind" from some moives, is there any difference between them? If there is any, which one should I use under what kind of situation? one more question: is there any difference between "now and then" and "once in a while"? or they are exchangable? And usually what's the freqency when you use them? like once in several month or something? thank you all!

differences among two groups of words 1. stare, gaze, peer 2. glance glimpse skim what are the differences of the words among each group? specifically, when should I use stare instead of gaze?

how to use "well" and "all right" ? when others said something and I want to express the meaning of "ok" then tell them my own opinions. native speakers always begin the sentences with "well" or "all right". whats the difference?

how to use 'There you go.' naturally in everyday conversation I often heard people say 'there you go' or 'here you go' in many different situations when watching movies and TV series. I'm confused when these two sentences can be used and do they express similar meaning? thank you for explanation with examples!

what's the difference of words that mean really good? I've always heard people say words like fantastic, fabulous, terrific, wonderful, gorgeous, excellent, etc when they consider something really good. I was wondering what's the difference among these words?can I use them as the same? or the intensity of them is different? I'd appreciate it if anyone could give me an answer better with some examples. thank you!