Key: "S:" = Show Synset (semantic) relations, "W:" = Show Word (lexical) relations
Display options for sense: (gloss) "an example sentence"
Verb
S: (v) catch up (reach the point where one should be after a delay) "I caught up on my homework"
S: (v) catch up (learn belatedly; find out about something after it happened) "I'm trying to catch up with the latest developments in molecular biology"