Theory:

Meaning of difficult words from the lesson "The Monkey and the Crocodile":
 
S.No
Words
Meaning
1.
Bank of a river
Slope or land near the edge of the river or lake
2.
Laden
Heavily loaded with something
3.
Content
Being satisfied and happy
4.
Companion
A friend or a partner
5.
Lonely
Being alone and not with others
6.
Appeared
To be seen suddenly
7.
Unfortunately
Unluckily
8.
Indeed
In reality
9.
Delicious
Refers to a pleasant taste
10.
Politely
Refers to behaving in a respectful way
11.
Plucked
To take or pull something quickly from a particular place
12.
Host
A person who invites guests and offer them food
13.
Certainly
Without any doubt
14.
Raising crops 
Growing crops
15.
Annoyed
Being irritated
16.
Managing
Handling something
17.
Hatch
To come out of an egg
18.
Foolish
Refers to being stupid
19.
Occasionally
Sometimes and not often
20.
Pretended
To behave in a way to make people believe something that is not true
21.
Furious
Extremely angry
22.
Dive
To jump into water
23.
Pester
To irritate someone repeatedly 
24.
Dilemma
A situation in which decisions has to be taken between two different things
25.
Fond
Refers to liking a person or a thing
26.
Betray
Not being loyal to someone who trusts you
27.
Generous
Giving people more than expected or needed
28.
Intention
A plan in mind to do something
29.
Hesitate
To pause or wait before doing or saying something
30.
Hide
To be somewhere where you cannot be found
31.
Survive
To continue to live in a difficult situation
32.
Scared
Being in a state of fear
33.
Distressed
Being very upset and anxious
34.
Sensible
Able to good judgements based on reason than on emotion
35.
Hissed
To make sound like a long 's'
36.
Reside
To live in a particular place
37.
Heave
To move up and down 
38.
Sigh
To take a long breath
39.
Relief
A feeling of happiness when some unpleasant thing stopped or does not happen
40.
Genuine
Real or original
41.
Translate
To change words into another language
42.
Categorize
To put people or things into groups according to its type
43.
Norms
Standard of behavior that is accepted by a particular group or society
44.
Conventions
A traditional way of something
45.
Assorted
Consists of mixed things
46.
Excerpt
A short piece or a segment taken from a book, document, music or a film