in, into, the middle (of two points in space, time, quantity etc)
middle from two points
Cases of word usage
1) the soft growth between the back of the nose and the throat, sometimes making breathing difficult (adenoids)
2) the period between childhood and maturity (adolescence)
3) the period between morning and evening (afternoon)
4) a space between two lines or surfaces that mean (angle)
5) the highest point e.g. the greatest distance between the Earth and a satellite (apogee)
6) the similarity of sound between one word and another because they have the same vowel or the same consonant (assonance)
7) any of many small planets between Mars and Jupiter (asteroid)
8) the season of the year between summer and winter (autumn)
9) a man with a voice between tenor and a bass (baritone)
10) a fight between organized and armed forces (battle)