The word is "timbre," which means the quality or type of sound. For example, a Trumpet has a different timbre than a cello.
The music gets louder
pianissimo!
slowly!
Slow
In musical terms, rinforzando means reinforced.
That's not a standard term in music.
Play loudly!
It means "smooth and connected".
A style or music is simply a characteristic that sets it apart from other types of music.
Tab is a form of music that many guitar players read.
I think it means a particular pitch
It means pianoforte or piano.