Difference between Though and Through?

Though = despite of, however. Ex..I will do it, though it is tough. Through = from one side of an opening to the other. Ex..I went through the window.

though it is difficult for me though I shall do it though he climbed the tree through the ladder

Though is a conjunction, like “and” “but” and “or”. It is used when the writer wants to point out a problem, a conflict, or counterpoint. Through is a preposition, a word that can modify verbs, nouns, or adjectives. ... As a verb, it's the act of thinking now or at any point in the past.