Please note: These are not std. definition. I have simplified them in my own words.
simile: Expressing person, object like other person objectSimple rule to identify simile is the word Like & as.
For E.g.
So, note the use of word Like, and you will note the simile
Metaphor: Expressing person, object as if it is the other object
For e.g.
Oxymoron: Expressing negative view in positive way.
For. e.g.
Hyperbole: Expressing a thought, feeling, thing in an extravagant statement; the use of exaggerated terms for the purpose of emphasis or heightened effect.
For e.g.
Synechdoche: a part is used to represent the whole, the whole for a part, the specific for the general, the general for the specific, or the material for the thing made from it.
Now, forget the definition.
For e.g.
2) Give us this day our daily bread - Here you actually asking for meal that includes roti, sabji et al. But you are asking this part as a whole (whole in this case is bread)
I will post more FOS soon, so practice it guys and make sure that you get those 4-5 question in XAT in your kitti rightway