If I'm not mistaken, REACT is a compound word.
baseballbasketballblackballbutterballcannonballcornballdirtballeyeballfireballfootballfastballfuzzballgumballhairballhandballhighballkickballmeatballmothballnetballoddballpaintballpinballracquetballscrewballsnowballsoftballspitballtarballtrackballvolleyball
airspaceanyplacebackspacecoalfaceeveryplacefireplacefootracemarketplaceoutfaceoutpacepalacesomeplaceworkplaceworkspace
airwayalleywayanywaybreezewaydoorwaydrivewayfairwayflywayfreewaygetawayhideawayhighwayhallwayheadwayhideawaymidwaymotorwayparkwaypassagewaypathwayracewayrailwayroadwayseawaysomewayspeedwaystairwaysubwaytidewaytrackwaytramwayunderwaywalkwaywaterway
wingspread
Clothespin and topspin are compoundwords ending in 'pin'.
Passerby is a compound word ending in by.
there is no compound word in English ending with zebra. I looked in the dictionary.
baseballbasketballblackballbutterballcannonballcornballdirtballeyeballfireballfootballfastballfuzzballgumballhairballhandballhighballkickballmeatballmothballnetballoddballpaintballpinballracquetballscrewballsnowballsoftballspitballtarballtrackballvolleyball
If there is no significant word in a compound word, you can add the plural ending directly to the last word in the compound.
If there is no single significant word in a compound word, add the plural ending to both parts of the compound word.
One example of a compound word ending with "heat" is "heartbeat."
One compound word ending with by is......... Driveby!
The word is inservice.
housekeeper
houseboat?
there is no compound word in English ending with zebra. I looked in the dictionary.
Compound words ending with belly: beer belly, pot belly