Cases of word usage

1) an interval between two activities or two periods of time of different character; a piece of music played during such an interval between parts of a concert, play etc (interlude)

2) (during the) interval between two events (meantime)

3) an interval of eight notes between two notes so that the first has a pitch double the value of the other; the first eight lines of a sonnet; verse of eight lines (octave)

4) a short interval or stop (while doing or saying something) (pause)

5) that in which all objects exist and move; a measurable interval or distance between two or more objects; a period of time (space)