"Life jacket" is typically written as two words. However, in some contexts, it may be seen as one word ("lifejacket"). Both forms are widely understood, but "life jacket" is the more common usage in standard writing.
It should be two words: life jacket. But it is probably better to hyphenate it as life-jacket. The two words are inseperable and make a concept different from what a jacket is--a life-jacket is not a kind of jacket. Semantically, they form a single word. Probably in due course it will be spelled as a single word, but in the meantime use the hyphen.
"Lifetime" is one word.
It is two words.
It is quite acceptable to spell it as either one word or two. Both Yellowjacket and Yellow Jacket are correct.
one
Lifestyle, life style, or life-style. All can be used.
Yes. It was formed as a compound noun (life's time = lifespan). It can mean an actual entire life or an example of hyperbole.
Henry Winkler had two jackets that he could wear in his role as Fonzie. One was a green jacket, which he didn't like. The other was the dark leather jacket that he wore with his motorcycle.
Yesterday I bought a ninety-dollar jacket On the weekend we went for a two-hour trip. My sister visited yesterday with her three-month-old baby. ( a three word one)
It is used as one word.
no it is not an one word it is of two word
One or two inches below your belt. Not too short, not too long. It's a jacket, not a shirt or a coat.