New Words - will (hopefully) keep updating

Dichotomy - something that is two sided
Poignancy - touching, moving: physically painful
Caesura - break-up, pause, sentence ends mid-line (how Caesar was born - c section -> caesarian section)
Enjambment -  "the running on of the thought from one line, couplet, or stanza tothe next without a syntactical break." (Dictionary .com)
Arduous - difficult
Subsantiating - to verify