precaution vs safeguard

precaution and safeguard both are nouns.

Word	Noun	Adjective	Verb	Adverb
precaution	Yes	No	No	No
safeguard	Yes	No	Yes	No

As nouns, precaution and safeguard are synonyms defined as:

precaution and safeguard: a precautionary measure warding off impending danger or damage or injury etc.

Other synonyms of precaution include guard.

precaution (noun)	safeguard (noun)
a precautionary measure warding off impending danger or damage or injury etc.	a precautionary measure warding off impending danger or damage or injury etc.
the trait of practicing caution in advance	a document or escort providing safe passage through a region especially in time of war
judiciousness in avoiding harm or danger

precaution (verb)	safeguard (verb)
	make safe
	escort safely