Islam is verb (action), while other religion is noun.
it is not an 'ism' or 'ity'.
Hindu-ism, Christianity, Judaism, Sikhism......Hindu, Christian, Jew,Sikh, these are noun and if you want to make it religion, you have to put Ism or ity.
first impression is the best impression, to strike someone's mind. but this is not the Manhaj, I think.
Islam is submitting your will to Only One True God
do you think there is only One God, if you believe only one God, Not Jesus,Moses or Rama, Krishna or Buddha, then, an unimaginable being, then actually Islam is saying that,to submit to only One true God
Ilaah= Being worthy of Worship
Allaah= The Being worthy of worship, 'the' makes it definite, thus, one and only
Like we say, Laa Ilaaha illa-llaah
Laa= (there is) No (One/God)
Ilaaha = Being worthy of worship
illa = except/ but
nt short, but one can make it short, i explained