As a noun, it's one word.
As a verb, it's two: work out.
E.g. "I did a two-hour workout yesterday. I went to the gym to work out."
- More -
The same rule is true for any common combination of a verb and preposition; the noun or adjective is one word, while the verb is two words: "This software is easy to set up because its setup manual is written clearly."
The reason for this rule is that, at least in English, you couldn't form the past tense (-ed) or gerund (-ing) if the verb form were a single word; you'd end up with strange combinations like "workoutted" or "setupping"!
Workout as one word like that is a noun. To use it as a verb, you would split it into two words. For instance, "I'm going to go work out." Then, later, "I'm done with my workout." Work out is the verb form, and workout is the noun form. Workout can also be an adjective, as in "I'm changing into my workout clothes."
Its not one word, its actually two words: Pax Romana.Its not one word, its actually two words: Pax Romana.Its not one word, its actually two words: Pax Romana.Its not one word, its actually two words: Pax Romana.Its not one word, its actually two words: Pax Romana.Its not one word, its actually two words: Pax Romana.Its not one word, its actually two words: Pax Romana.Its not one word, its actually two words: Pax Romana.Its not one word, its actually two words: Pax Romana.
No, the word "downstairs" is a single word, not two words.
It's one word.One word as an adjective; two words as a noun
in-house - two words, hyphenated.
Car sick is two words.
the word in between is two words
Two words - "one day".
two words
They are two words conjoined to be one.
Two words.
The term for two words that make one word is a compound word.