bonnethead vs shovelhead

bonnethead and shovelhead both are nouns.

Word	Noun	Adjective	Verb	Adverb
bonnethead	Yes	No	No	No
shovelhead	Yes	No	No	No

As nouns, bonnethead and shovelhead are synonyms defined as:

bonnethead and shovelhead: small harmless hammerhead having a spade-shaped head; abundant in bays and estuaries

Other synonyms of bonnethead include bonnet shark, Sphyrna tiburo.

bonnethead (noun)	shovelhead (noun)
small harmless hammerhead having a spade-shaped head; abundant in bays and estuaries	small harmless hammerhead having a spade-shaped head; abundant in bays and estuaries