Some friction will occur with seemingly smooth surfaces because at a molecular level, nothing is smooth.
Rolling coefficients of friction between hard wheels and solid smoth surfaces of the kind that you describe, are usually very small and below 0.02 . The friction force is this number multiplied by the weight carried by the skate-board so it would not exceed 4 lb. However to answer the question fully, hardly anybody finds this friction, most people are not interested in it.
smoth jazz
Smoth Muscle.
yes.
intestine, and stomach
"Smoth-ish" is not a standard English word. It is possible that it is a typo or a misspelling of "smoother," which means having a more even or liquid consistency.
Smoth
animal cells
smoth and rinkerly
There are two syllables. Smoth-er.
Actually they don't they have short smoth fur.
No it nurishes it and leaves it beautifuly smoth and soft.