continue vs extend

continue and extend both are verbs.

Word	Noun	Adjective	Verb	Adverb
continue	No	No	Yes	No
extend	No	No	Yes	No

As verbs, extend is a hyponym of continue; that is, extend is a word with a more specific, narrower meaning than continue:

Other hyponyms of continue include carry, die hard, endure, persist, prevail, run, stand.

As verbs, continue and extend are synonyms defined as:

Other synonyms of continue include cover.

continue (verb)	extend (verb)
exist over a prolonged period of time	extend one's limbs or muscles, or the entire body
continue talking	thrust or extend out
move ahead; travel onward in time or space	extend in scope or range or area
allow to remain in a place or position or maintain a property or feature	lengthen in time; cause to be or last longer
keep or maintain in unaltered condition; cause to remain or last	continue or extend
continue a certain state, condition, or activity	expand the influence of
span an interval of distance, space or time	increase in quantity or bulk by adding a cheaper substance
continue in a place, position, or situation	prolong the time allowed for payment of
continue after an interruption	use to the utmost; exert vigorously or to full capacity
do something repeatedly and showing no intention to stop	open or straighten out; unbend
	extend or stretch out to a greater or the full length
	cause to move at full gallop
	offer verbally
	make available; provide
	span an interval of distance, space or time
	reach outward in space
	stretch out over a distance, space, time, or scope; run or extend between two points or beyond a certain point