safety net vs meshwork

safety net and meshwork both are nouns.

Word	Noun	Adjective	Verb	Adverb
safety net	Yes	No	No	No
meshwork	Yes	No	No	No

As nouns, meshwork is a hypernym of safety net; that is, meshwork is a word with a broader meaning than safety net:

safety net: a large strong net to catch circus acrobats who fall or jump from a trapeze
meshwork: an open fabric of string or rope or wire woven together at regular intervals

Other hypernyms of safety net include mesh, meshing, net, network.

safety net (noun)	meshwork (noun)
a large strong net to catch circus acrobats who fall or jump from a trapeze	an open fabric of string or rope or wire woven together at regular intervals
a guarantee of professional or financial security