They're both grains, used in breadmaking etc.
Any grain can be ground into flour but the most common grain used is wheat.
Yes. Spelt can have wheat proteins, so if you are allergic to wheat you should avoid spelt as well.
Yes.
Yes. Spelt is wheat. All wheat contains gluten.
is a hexaploid species of wheat
hole is spelled whole
not necessarily. spelt is easier to digest
Yes absolutly.
The homonym of "wheat" is "wheat." Homonyms are words that are spelled and pronounced the same but have different meanings. In this case, "wheat" refers to the cereal grain, while "wheat" can also refer to the color yellowish-brown.
Whole Wheat.
hole is spelled whole
Yes, wheat bread is a common noun; a singular, common, concrete, open compound noun.