Two examples are:
backtrack
soundtrack
train track
railroad
Railroad
railroad
A compound word for train tracks would be railroad or railroad tracks.
Yes, the term 'long jump' is a compound noun, a word for a sports event in which each person tries to jump further than the other people; a word for a thing,
No, building is not a compound word.
The contraction (not a compound word) is doesn't.
Upwards is a compound word.
There is no compound word.A compound word is a word like bus-stop.Husban is spelt like this husband
Compound words are made of individual words as in in factreal word and brass track give pseudocode to a search operation in a trie that will that will find if a given search string is a co?"
Upstairs is a compound word, so it is one word.