task vs picnic

task and picnic both are nouns.

Word	Noun	Adjective	Verb	Adverb
task	Yes	No	Yes	No
picnic	Yes	No	Yes	No

As nouns, picnic is a hyponym of task; that is, picnic is a word with a more specific, narrower meaning than task:

task (noun)	picnic (noun)
a specific piece of work required to be done as a duty or for a specific fee	any undertaking that is easy to do
any piece of work that is undertaken or attempted	any informal meal eaten outside or on an excursion
	a day devoted to an outdoor social gathering

task (verb)	picnic (verb)
use to the limit	eat alfresco, in the open air
assign a task to