Hi MALAYALEE, thanks for sharing.
Em... sincerely, I'm sick of answering such questions about religions and stuff. 'cause when I try to give answers and argue seriously, many people come and do a BIG mess around. So I'll answer too briefly:
Nope, crusade and jihad are too different things. Crusades are the Christian holy wars, but jihad isn't the same. It’s the act to fight evil force, from internal bad intentions to military activities - under precise circumstances- and I underline "evil forces" by 2 thick red lines.