bluster vs boast

bluster and boast both are nouns.

Word	Noun	Adjective	Verb	Adverb
bluster	Yes	No	Yes	No
boast	Yes	No	Yes	No

As nouns, boast is a hypernym of bluster; that is, boast is a word with a broader meaning than bluster:

Other hypernyms of bluster include boasting, jactitation, self-praise.

As verbs, bluster and boast are synonyms defined as:

Other synonyms of bluster include blow, brag, gas, gasconade, shoot a line, swash, tout, vaunt.

bluster (noun)	boast (noun)
a swaggering show of courage	speaking of yourself in superlatives
vain and empty boasting
a violent gusty wind
noisy confusion and turbulence

bluster (verb)	boast (verb)
act in an arrogant, overly self-assured, or conceited manner	show off
show off	wear or display in an ostentatious or proud manner
blow hard; be gusty, as of wind