throughout can be used as a preposition to mean ‘from beginning to end’ of something.
They argued throughout the lecture.
The trees provided a beautiful canopy throughout the hike.
when using throughout as a preposition, remember that it typically takes the form of ‘throughout (noun)’.
Throughout can also used as an adverb to mean ‘all over’ or refer to something that occurs or is visible in all parts of something. It can also refer to the process of something happening across a range of parts.
‘I could feel the excitement throughout the audience.
The landscape was covered in snow throughout’.
The joy was spread throughout the stadium.
when using throughout as an adverb, remember that it is usually used to describe an action that is happening across a wide area or involving many people.