shareware vs software package

shareware and software package both are nouns.

Word	Noun	Adjective	Verb	Adverb
shareware	Yes	No	No	No
software package	Yes	No	No	No

As nouns, software package is a hypernym of shareware; that is, software package is a word with a broader meaning than shareware:

shareware: software that is available free of charge; may be distributed for evaluation with a fee requested for additional features or a manual etc.
software package: (computer science) written programs or procedures or rules and associated documentation pertaining to the operation of a computer system and that are stored in read/write memory

Other hypernyms of shareware include computer software, package, software, software program, software system.

shareware (noun)	software package (noun)
software that is available free of charge; may be distributed for evaluation with a fee requested for additional features or a manual etc.	merchandise consisting of a computer program that is offered for sale
	(computer science) written programs or procedures or rules and associated documentation pertaining to the operation of a computer system and that are stored in read/write memory