や、やいなや => As soon as A, B N1
Time, Situation
いまや => now, these days N3
Compare
もはや~ない => no longer; not anymore N1
Invariant
~やまない      => always; never stop; can't help but ~ N1
~やまない => always; never stop; can't help but ~ N1
Emotional
やすい => A is easy to do N4
Verb Suffixes
や => ... or... N5
Line up, list
や否や => as soon as; the moment ~ N1
やすい => easy to; likely to; prone to; have a tendency to ~ N4
や => and; or N5
~かと思いきや => contrary to expectations; or so we thought, but ~ N1
Things do not match the prediction
てやまない => To (always) think/feel/hope/etc. A N1
Will, Decision, Doing