POST is a hinge word: 1 words make a compound in front of it and 4 make one after it, so it can sit in the middle of a chain and hold two compounds together at once.
Each of these makes a compound ending in POST.
Each of these makes a compound starting with POST.
POST is three unrelated words sharing a spelling. The stake gives OUTPOST, the mail gives POSTCARD, POSTMAN and POSTMASTER, and the Latin prefix meaning after gives POSTWAR.
Put any word from the first list in front and any word from the second behind, and you have a three-word chain in which both neighbouring pairs join. Here are some of them.
OUT → POST → CARD — outpost and postcardKEYSTONE is a free daily puzzle built entirely out of chains like these. You get the two ends and have to fill the two words in the middle. Three bridges a day, no account, no cookies.
Each of these has a page like this one. There is also an index of all 54.
AWAY · BACK · BALL · BED · BLACK · BOARD · BOOK · BOY · BREAK · CHECK · DAY · DOOR · DOWN · FALL · FATHER · FIRE · GROUND · GUN · HAND · HEAD · HOOD · HOUSE · LAND · LESS · LIFE · LIGHT · LINE · LOAD · MAN · MOTHER · NIGHT · OFF · OUT · OVER · PAY · POINT · POWER · ROOM · RUN · SHIP · SIDE · SOME · STEP · SUN · TAKE · TIME · TURN · UNDER · WALK · WATER · WAY · WOOD · WORK