They sound the same but have different meanings.
To is the most common form and the first choice.
Two words which talk about different versions of the same thing.
One verb and three nouns.
These is the plural form of This.
This for things close to you. That for things far from you.
True is an adjective. Truth is a noun.
Take Part is to be active. Take Apart means to separate.
Trick is to deceive. Tricky is something difficult to do.
Useful is positive. Useless is negative.