The letters do not spell any 13 letter words. They can be used to spell many words including the 10 letter words streetcars, stretchers and trimesters.
'PROSCENIUM' itself is the only 10-letter word using those letters. There are several 8-letter words, but no other 10-letter ones.
How many three-letter "words" can be made from 10 letters "FGHIJKLMNO" if repetition of letters are not allowed
There are no possible 10-letter words, there are these 9-letter words though:antikingsknightingthinkingsvanishing
buckingham
Charleston
journalist
The letters can be used to spell hundreds of words. The longest word is the 10 letter word incoherent. The letters also spell many 9 letter words including buckthorn, centurion, encounter, nitpicker, reception, recipient and thereupon. The letters spell many 8 letter words including bouncier, brethren, brochure, chinbone, coherent, continue, entrench, erection, eruption, hereupon, inherent, interior, neurotic, northern, prohibit, renounce, rhetoric, trickier, turnpike and unbroken.
There is no ten letter word spelled with the letters 'rscaeesvse'.Words that can be spelled with those letters are:aaceacesacreacresarcarcsareasassassesaveaveraversaversecarcarecarescaresscaressescarscarvecarvescasecasescavecavercaverscavesceaseceasescrasscravecravescreasecreasescresscrevassecrevassesearearseaseeaseseaveeaveseraeraseraseerasesereeveeverraceracesraveravesrecessrecessessacsacssasssavesaversaverssavesscarscarescaresscarsscarvesscreeseasearsearsseasseeseerseersseesserveservesseversevereseversvasevasesveerveersverseverses
Some 10 letter words that start with Q are:quadranglequaintnessquantifierqueasinessquesadillaquintupletquirkiness
The letters do not spell any 10 letter words. However, they can be used to spell the 6 letter afraid.
There are no nine letter words using those letters, there are two eight letters words: Caryotin and Tornadic. Perhaps you meant Dictionary (but that has 10 letters)