So, forexample, considerthefootasinananatomicalpart, butwecouldalsotalkaboutthefootof a table, orthefootof a mountain.
So, usingthemetaphorhereoftheanatomicalpart, that's sortofthesourceforustounderstandthatit's thepartofthetablethat's holdingtherestofthetableup, orthesamethingwith a mountain.
Similarly, wecouldtalkabout a moleasinthemammalthatburrowsunderground, spendsmostofitslifeinthesubterraneanenvironment, andwecouldalsotalkabout a moleasin a spy, orsomebodywho's beenplantedforthepurposeofespionage, that's sortofusing a metaphoricalrelationshipwiththeanimalbecauseitis a moleasin a humanbeing.
A spyisperceivedasbeinghiddenorunseen, that's polysemy, thepolymeaningmany, andseemmeaningmeaning, somanymeanings. Next, wecouldtalkaboutmetonymy, andmetonymyisreallyinterestingbecauseit's a bigcategory, butit's reallytheideathatyou'rereferringtoonethingbasedonsomecloserelationshiptoanotherthing, andthiscouldbeintermsofassociation, likeforexamplewhen a serversaystable 14 needswater, ofcoursetable 14 doesn't needanything, it's aninanimateobject, butitisusedtorefertothecustomerwhoisseatedatthattable, they'retheoneswhoneedwater, soit's basedonassociation.
Butwecouldalsotalkaboutmetonymyintermsofreferringto a containertotalkaboutthecontents, likewhenforexample I say I atethewholebag, I didn't literallyeatthebag, if I did I wouldn't bemakingthisvideo, I wouldbeinthehospital, so I'm justreferringtobagtotalkaboutthecontainer, thechipsthatareinsideofitforexample.
Butwecouldalsotalkaboutmetonymyintermsof a part-wholerelationship, whereforexample a captainmightsayon a boat, allhandsondeck, thatmeansthatthepeoplethemselves, theyhavetogoupanddowork, theyhavetobeondeck, butwe'rejustpickingoutonesalientfeatureofthehumanbeing, thehand, torefertothewholebody.