Usually used as one word.
No. A compound word contains two separate words joined together to make one word. For example: copyright, homebound, healthcare.
It is actually both, usage is based on preference. Generally "healthcare" is used by hospitals, while "health care" is used by other services.
Health care is two words, however when used a modifier (healthcare provider) it's one word or used with a hyphen.
It is used as one word.
no it is not an one word it is of two word
Hipbone is one word.
I think the word "ongoing" is only one word, but it has two syllables that are two separate words.
The word "hairbrush" is typically written as one word, not two.
One word, two syllables
It is one word.
one word
It is one word.