As for Spanish Penal Code there are two types of crimes: political ones and commun, the rest.
As for the difference between преступление and уголовное преступление
I have found in a dictionary in the web that уголовное преступление is this crime punished with execution.
Since it all has born from the phrase about the prohibition of selling alcohol to young people in Russia:
Продажа адкоголя детям на территории Российской федерации будет считаться уголовным преступлением.
I will translate уголовное преступление as "an specially grave crime" since here this punishment obviously is out of case.
Thanks.