や、やいなや => As soon as A, B N1
Time, Situation
やら~やら => A, B, ... (examples from a list) N2
Lists, Examples
[向「む」]け => Made for A, intended for A N2
Adjectival, Descriptions
やる => Give B to A N4
Give and take advice
てやる => Do for someone N4
Give and take advice
に[難「むずか」]くない => It's not hard to A N1
Adjectival, Descriptions
やすい => A is easy to do N4
Verb Suffixes
ずにすむ => Not doing A will suffice; Can get by without doing A N1
Need/Requirements
てやまない => To (always) think/feel/hope/etc. A N1
Will, Decision, Doing
が[早「はや」]いか => As soon as A occurred, right after A N1
Time, Situation
と[思「おも」]いきや => Even though A (was thought/expected), different result B N1
Contrast/Surprise
や => N1 and N2 (shows a non-exhaustive list of items), N1 or N2 (small amount) N5
Particles