The first line, because dialect in literature means a form of writing that shows the accent and way people talk. Because of the definition where it says “might ‘a’ thought” is dialect.
The second one, and the last one
An amount/number of something
Quantitative describes the quantity of something
Qualitative describes the quality of something
The Broadway show "Movin' Out" was based on songs written by the songwriter named Billy Joel.
The musical features many of his songs, among which is of course the eponymous song Movin' Out (Anthony's Song), released in 1977 on his album The Stranger. It was an immediate hit, and it influenced many other artistic performances as well.
Yes, the word "easy" is a common noun
hope this helps