-OR & -ER SUFFIXES

Remember that some "-or" and "-er" endings are suffixes so you can create nouns coming from verbs. e.g:

clean + -er = cleaner
paint + -er = painter
vistit + -or = visitor

The most common ending to create nouns from verbs is -ER.

You can revise it in your activity book on page 20 exercice 3.