Arrangement, in music terms means to alter the original composition so as to: make it usable for another instrument; make the the rhythm different; make it usable for voices instead of instruments, etc.
Any way you alter a composition to make it sound differently without altering the melody is an arrangement.
The music gets louder
slowly!
pianissimo!
Slow
In musical terms, rinforzando means reinforced.
That's not a standard term in music.
Play loudly!
A style or music is simply a characteristic that sets it apart from other types of music.
It means "smooth and connected".
Tab is a form of music that many guitar players read.
A GUI widget displays an information arrangement changeable by the user, such as a window or a text box.
A semibreve is equivalent to a whole note.