brasa - ember
grasa - greasy
tasa - rate/fee
crasa - crass
escasa - scant
rasa - flat/level
gasa - gauze
masa - mass
pasa - raisin
Any verb ending in -asar in the 3rd person conjugation. For example:
pasar - pasa - h/s/y passes
amasar - amasa - k/s/y kneads
basar - basa - h/s/y bases
asar - asa - h/s/y roast
tasar - tasa - h/s/y values
atrasar - atrasa - h/s/y puts back
soasar - soasa - h/s/y roasts lightly
There are more, but that should be a good start!

thank you! i'm pretty bad at spanish and i have to write a poem for my spanish class and its so hard because i'll think of something that rhymes in english and then i'm just like oh wait...that doesn't rhyme at all in spanish! it sucks lol

I feel you!

Thanks Manutd. You know I had never come across the word soasar. I knew asar but not soasar. So i have learned something today. 'Tis good.

Just be aware that 'pasa' is a short form for 'pasa de uva' and very commonly used in spite of what follows

a full definition of pasa is
pasa: Se dice de la fruta extendida al sol para secarse, y también de la desecada por cualquier otro procedimiento: higo paso; uva, ciruela pasa
so pasa in theory should be any dry fruit but it normally refers to raisins.
sometimes we would use the word seco/a (dry) to refer to dry fruits eg higos secos, or even generically frutas secas. Pasa is very Castillian when used for anything other than raisins.

Amanda, why not post your poem, once you think it is finished and then we can help you to crrect/improve it'

Thanks for the information (and I'm glad to help!) =)