Question: how can i define variables 'omega' and 'omega[n]' in one worksheet?

i define two variables as follow:

restart:

omega:=1

omega[i]:=2

i find the 'omega' i had defined  renewd by

omega:=table[i=1]

then type:

omega,omega[i]

result is:    omega, 2

how can i define these two variables in one worksheet?

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