thorough
(complete; including every possible detail)
- We conducted a thorough search of the area but found nothing.
- It’s my responsibility to carry out a thorough investigation.
(careful to perform tasks with accuracy and precision)
- He is very thorough.
through
(from one end or side to the other)
- We must go through the woods.
- Our train passed through a tunnel.
(by means of)
- I sold my car through advertising on social media.
- You will achieve your goals through hard work.