If you mean by planets, then Mars is one, and Uranus, and Venus.
Some small words that end with 's' are:isasushashisgasitsbuswasthis
Some words that begin with S and end with W are:sallowSawscarecrowscowscrewseesawsewshowshrewsowspewswallow
Some words that start with S and end with B are:sahibscabscarabscrubshrubslabslobsnobsnubsobspareribspiderwebsquabstabstubsubsuburbsuccumbsuperbswab
Most plural words do.
Scattergories Starts with S ends With S
Princesses Cyclopes
apples
ska!
s
Nouns ending with -o that form the plural by adding -s to the end of the word are:autoscameoskangarooskilosmemosphotospianossolosstudiostattoosvideoszoos
Some words that end in -s that are always plural are:accommodationsamendsarchivesbarracksbinocularsbowelsclothescommunicationscongratulationscontentscrossroadsforcepsgallowsglasses (vision aid)goodsheadquartersjeansmathematicsmeansnewspajamaspantsscissorsseriesshortsspeciesstairstongstrouserstweezers
words that don't normally have an 's' on the end