art
greenhousegreenerygreenishwintergreengreenback
There is no one-or-two word anagram, and no apt phrases. There are a number of nonsense phrases such as "enjoy magma dish."
There is no single common English word that uses all of the letters. It can form phrases such as "caravel surtax." The longest single word that can be made is "traversal" (nine letters).
Words used to connect words and phrases are conjunctions.
Simple as pie
For better for worse
table
pig out put out
BIG
art
middle of the road or in the middle of nowhere
Safer, safest, safehouse, safecracker, and vouchsafe.
She's a real drama queen.
Sunshine, sunscreen, sunflower, sundial.
diamond in the rough
"at school taking a test"