The noun bread is a mass (uncountable) noun. Individual units of bread are expressed as a loaf of bread, loaves of bread, a slice of bread, slices of bread, pieces of bread, etc.
You would not say "There is a bread on the table.", you would say, "There is a piece of bread on the table." or "There is some bread on the table."
The plural forms for a mass noun are reserved 'types of' or 'kinds of'; for example:
If you say, "There are five breads on the table." it means five kinds of bread such as Italian, rye, French, corn, etc.; or "He bought breads." would mean that he bought the sandwich bread, the hot dog rolls, and the hamburger buns, or whatever kind of breads were expected or needed.
"Bread" is typically considered an uncountable noun when referring to it in general terms, as it represents a substance rather than individual items. However, when referring to specific types or loaves of bread, it can be used as a countable noun (e.g., "three loaves of bread"). The context determines whether it is countable or uncountable.
countable
countable
The noun 'hill' is a countable noun. The plural form is 'hills'.
cookies are countable unless you have brain problems
countable
Shark is a countable noun.
Duck as an animal is countable, but if you mean the meat it is uncountable.
Prawn - prawns is the plural - is a countable noun
countable
few is countable
Countable