connect vs link up

connect and link up both are verbs.

Word	Noun	Adjective	Verb	Adverb
connect	No	No	Yes	No
link up	No	No	Yes	No

As verbs, connect and link up are synonyms defined as:

Other synonyms of connect include associate, colligate, link, relate, tie in.

As verbs, connect and link up are synonyms defined as:

connect and link up: connect, fasten, or put together two or more pieces

Other synonyms of connect include link, tie.

As verbs, connect and link up are synonyms defined as:

Other synonyms of connect include join, link, unite.

connect (verb)	link up (verb)
make a logical or causal connection	make a logical or causal connection
join for the purpose of communication	connect, fasten, or put together two or more pieces
join by means of communication equipment	be or become joined or united or linked
connect, fasten, or put together two or more pieces
land on or hit solidly
plug into an outlet
hit or play a ball successfully
establish communication with someone
establish a rapport or relationship
be or become joined or united or linked
be scheduled so as to provide continuing service, as in transportation