bolo vs bolo knife

bolo and bolo knife both are nouns.

Word	Noun	Adjective	Verb	Adverb
bolo	Yes	No	No	No
bolo knife	Yes	No	No	No

As nouns, bolo and bolo knife are synonyms defined as:

bolo and bolo knife: long heavy knife with a single edge; of Philippine origin

bolo (noun)	bolo knife (noun)
long heavy knife with a single edge; of Philippine origin	long heavy knife with a single edge; of Philippine origin
a cord fastened around the neck with an ornamental clasp and worn as a necktie