[向「む」]け => Made for A, intended for A N2
Adjectival, Descriptions
に[難「むずか」]くない => It's not hard to A N1
Adjectival, Descriptions
ずにすむ => Not doing A will suffice; Can get by without doing A N1
Need/Requirements
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