Complete can be a verb and adjective
Such as "I completed (verb) the task","It is completed(adjective)."
Done is an adjective
"The task is done"
Finish can be verb and adjective
"I finished (verb) the meal"
"The meal is finished(adjective)"
Complete can be a verb and adjective
Such as "I completed (verb) the task","It is completed(adjective)."
Done is an adjective
"The task is done"
Finish can be verb and adjective
"I finished (verb) the meal"
"The meal is finished(adjective)"