Yesterday I mentioned the simlilarity between Spanish and other Latin based languages. In addition though, Spanish has been influenced by Arabic over the years. This is not surprising given that Spain was occupied by the Moors (los Moros) from northern Africa for over 700 years.
One of the commonest examples is 'ojalá', meaning 'hopefully' or 'God willing'. This is derived from the commonly used Arabic phrase 'insha Allah' meaning 'God willing'.
A few other examples of Spanish words with Arabic roots are -
aceite - oil
azucar - sugar
rincón - corner
barrio - neighbourhood
sofá - sofa
naranja - orange