Theory:

Meaning of difficult words from the lesson "Chandni":
 
S.No
Words
Meaning
1.
String A piece of long, thin rope
2.
BreedA particular variety of animal
3.
PoleA rounded stick or rod that is commonly constructed of wood or metal
4.
Unfortunately Used to describe an event that is unlucky or bad
5.
HardshipDifficult or unpleasant conditions of life
6.
MysterySomething strange that you cannot understand
7.
PuzzledConfused because you are unable to understand something
8.
InsaneMentally ill
9.
Departure Leaving or going away from a place
10.
Disposition The particular type of character that a person has 
11.
Gleamy Something that has a shining, clean appearance
12.
TemperamentThe basic character of someone
13.
FondnessLikeness for somebody or something
14.
AdoreTo love and admire
15.
AnguishMental pain or suffering
16.
ConfrontTo make somebody face or deal with an unpleasant, difficult person or situation
17.
PredicamentA difficult or unpleasant situation
18.
Shattered Broken into very small pieces
19.
Obstinate Refusing to change your opinions
20.
InsistTo say firmly that something must be done or must happen
21.
PrivilegeA special benefit or an opportunity available to someone
22.
Delicious Refers to a pleasant taste or smell
23.
IndeedIn reality 
24.
AnnoyedFeeling furious or irritated
25.
ThunderTo shout or complain very loudly and angrily
26.
InfuriateTo make somebody extremely angry
27.
SoleOnly or single
28.
YellTo shout loudly
29.
Confine (space)Small space and not free to move about
30.
SeparationRefers to a situation or period of isolation
31.
BeckonTo invite someone to get closer
32.
GreetTo welcome somebody
33.
RelishGreat enjoyment
34.
GruntTo make a short, low sound from the throat
35.
DiscernTo know or understand something
36.
ResideTo live in a particular place
37.
TerrifiedVery scared or frightened
38.
PolitelyIn a respectful manner
39.
Ferocious
Very aggressive, strong and violent
40.
Treacherous
Dangerous and intending to harm you
41.
PredatorAn animal that kills and eats other animals
42.
Courageous Capable of facing and trying to overcome danger or fear
43.
PreserveTo protect from harm or loss
44.
ResolvedTo make a firm decision and stick to it