@ ajay
the crystal lattice and lattice are the same thing , only they are givel crystal lattice as they are crystalline in nature , crystalline nature means they are true solids with definite size , shape and mass , and after all if we cut them by knife they will give regular shape , they can conduct electricity in solid state , as well .,
so, they are called as crystalline lattice , they have also 1 other name which is called as bravais lattice .
just remember the name of 14 lattice syatem , donot required to remember the measurement and ratio n angle .
they have a very small small components called as unit cell , and when u will rotate these lattices in diffrent direction u can get the unit cell .
HOPE IT CLEARS YOUR DOUBT
ASK THE FORUM IF U HAVE MORE DOUBT ..