large order vs task

large order and task both are nouns.

Word	Noun	Adjective	Verb	Adverb
large order	Yes	No	No	No
task	Yes	No	Yes	No

As nouns, task is a hypernym of large order; that is, task is a word with a broader meaning than large order:

Other hypernyms of large order include labor, labour, project, undertaking.

large order (noun)	task (noun)
a formidable task or requirement	a specific piece of work required to be done as a duty or for a specific fee
	any piece of work that is undertaken or attempted

large order (verb)	task (verb)
	use to the limit
	assign a task to