very, greatly

contribute; make a contribution

contribution

Same as above

to be perfectly clear / to be logical, consistent, penetrating

thinking; thought process; a train of thought

to think

solution, settlement / (music) Progression from dissonance to consonance; a chord to which such progression is made; resolution

(transitive) solve, resolve, settle (a problem, a trouble, a criminal case) / (intransitive) be solved, be settled / (intransitive) can be solved; be soluble

he / distal demonstrative, something far off removed from both speaker and listener: that / boyfriend