間 => while; during; between ~ N4
~やむをえず  => unavoidable, no other way to do something N2
Necessity, obligation
瞬間 => At the very moment N3
Short period of time
間に => while; during~ something happened N4
へ => Go to N, head to N , Often followed by verbs like 行く/いく, 来る/くる, 向かう/むかう… N5
Particles
むりをする => to work too hard, to try too hard, to strain oneself N3
Description
[間「あいだ」]/[間「あいだ」]に => During A, During A (before A is finished/over) N2
Time, Situation
むき => facing towards N3
Direction
むしろ => rather; instead N2
Compare
...はむりだ... => impossible N4
Description
込む => to be crowded N3
なくて済む/ないで済む => get by without doing ~ N2