structure vs groundwork

structure and groundwork both are nouns.

Word	Noun	Adjective	Verb	Adverb
structure	Yes	No	Yes	No
groundwork	Yes	No	No	No

structure (noun)	groundwork (noun)
a thing constructed; a complex entity constructed of many parts	preliminary preparation as a basis or foundation
the manner of construction of something and the arrangement of its parts	lowest support of a structure
a particular complex anatomical part of a living thing and its construction and arrangement	the fundamental assumptions from which something is begun or developed or calculated or explained
the complex composition of knowledge as elements and their combinations
the people in a society considered as a system organized by a characteristic pattern of relationships

structure (verb)	groundwork (verb)
give a structure to