The compound words backpack, backtalk, ballpark, bareback, bluebook, bodywork and bookmark will work. The word bobolink is not a compound word that meets the specifications.
An eight letter word that starts with S and ends with T: satiristshortestsmallestsmarteststagnantstalwartstiffeststridentsubtract
lollipop
appendix.
ClausureCocksureCoinsureCynosureExposureFootsureIncisureOversurePleasurePressureReassureReinsureReposureSaussureScissureTreasureTressure
kindness
asterisk
Frigates.
Toadflax
attacked
The word sabotage is a eight letter word.
traction
grimace