firmly vs securely

firmly and securely both are adverbs.

Word	Noun	Adjective	Verb	Adverb
firmly	No	No	No	Yes
securely	No	No	No	Yes

As adverbs, firmly and securely are synonyms defined as:

firmly (adverb)	securely (adverb)
with firmness	in a secure manner; in a manner free from danger
with resolute determination	in an invulnerable manner
in a secure manner; in a manner free from danger	in a manner free from fear or risk
	in a confident and unselfconscious manner