Excel : Paste using CTRL-V:

a b
c d

Excel: Paste using paste button: 

a b
c d

Excel: Paste using paste from word button: 

a b
c d

Word: Paste using CTRL-V:

a

b

c

d

 

Word: Paste using paste button:  

a

b

c

d

Word: Paste using paste from word button:  

a

b

c

d