[見「み」]える => Can be seen; is visible N4
Causative, Passive, Volitional
やる => Give B to A N4
Give and take advice
てやる => Do for someone N4
Give and take advice
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
から[見「み」]れば => If you think from the standpoint of A N2
Considering, Concerning
やすい => A is easy to do N4
Verb Suffixes
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
のやら => I wonder A B, I don't know A B, It can't be said to be only A or B (opposites).. N1
Adjectival, Descriptions