flow sheet vs flow diagram

flow sheet and flow diagram both are nouns.

Word	Noun	Adjective	Verb	Adverb
flow sheet	Yes	No	No	No
flow diagram	Yes	No	No	No

As nouns, flow sheet and flow diagram are synonyms defined as:

flow sheet and flow diagram: a diagram of the sequence of operations in a computer program or an accounting system

Other synonyms of flow sheet include flow chart, flowchart.

flow sheet (noun)	flow diagram (noun)
a diagram of the sequence of operations in a computer program or an accounting system	a diagram of the sequence of operations in a computer program or an accounting system