COMPUTER

Write it backwards.

RETUPMOC

Replace every letter with the letter next in alphabet except first and last letter.

R = R
E = F
T = U
U = V
P = Q
M = N
O = P
C = C

RFUVQNPC

Similarly,

MEDICINE

ENICIDEM

E = E
N = O
I = J
C = D
I = J
D = R
E = F
M = M

EOJDJRFM

Hope it helps.

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Khushboo Hai Mere Khoon Mein Kafoor Ki Manind,
Bikhrunga Fizaun Mein Ek Noor Ki Manind . . .