boatbuilder vs constructor

boatbuilder and constructor both are nouns.

Word	Noun	Adjective	Verb	Adverb
boatbuilder	Yes	No	No	No
constructor	Yes	No	No	No

As nouns, constructor is a hypernym of boatbuilder; that is, constructor is a word with a broader meaning than boatbuilder:

boatbuilder: a person who builds boats
constructor: someone who contracts for and supervises construction (as of a building)

Other hypernyms of boatbuilder include builder.

boatbuilder (noun)	constructor (noun)
a person who builds boats	someone who contracts for and supervises construction (as of a building)