We can use like and as to say that things are similar.
Like is a preposition, used before a noun or pronoun.
As is a conjunction, used before subject+verb or a prepositional expression.
LIKE OR AS
- He died ......................he lived, fighting.
- Being in love is ..............an illness.
- It's mended, ..................you can see.
- In Paris, ................ in Rome, traffic is heavy.
- His eyes are ................ knives.
- My brother isn't at all ............me.
- She left .................