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Pea
Countable Noun
Pea is a countable noun; we say 'three peas', not 'three pea'. 
Quantifying Words
Use words like 'handful' or 'cup' to describe a quantity of peas. 
Pea Varieties
There are different types of peas, like 'snap peas' or 'snow peas' that have unique tastes. 