drag down vs press down on

drag down and press down on both are verbs.

Word	Noun	Adjective	Verb	Adverb
drag down	No	No	Yes	No
press down on	No	No	Yes	No

As verbs, drag down and press down on are synonyms defined as:

Other synonyms of drag down include bear down, bear down on, weigh down.

drag down (verb)	press down on (verb)
exert a force with a heavy weight	exert a force with a heavy weight