Give me examplrs of negative and positive (pairs)

Words may have positive or negative connotations that depend upon the social, cultural and personal experiences of individuals. For example, the words childish, childlike and youthful have the same denotative but different connotative meanings. Childish and childlike have a negative connotation as they refer to immature behavior of a person. Whereas, youthful implies that a person is lively and energetic.

Here are some example I found online: 
"Astute -- Sagacious

Bossy -- Dominant

Bum -- Homeless

Cheap -- Inexpensive

Cheap -- Thrifty

Childish -- Childlike

Cocky -- Confident

Conceited -- Self-confident

Cowardly -- Prudent

Crippled -- Disabled

Difficult -- Challenging

Disaster -- Problem

Fat -- Overweight

Fired -- Terminated

Foolish -- Unwise

Headstrong -- Determined

Job -- Career

Lazy -- Relaxed

Nag -- Remind

Nitpicking -- Meticulous

Nosy -- Inquisitive

Out of date -- Time-tested

Pig-headed -- Stubborn

Politician -- Statesman

Scrawny -- Thin

Stingy -- Economical

Stubborn -- Persevering" -YourDictionary

On the left is negative, the right is positive. 

I mean there is no passage. Also I don't know who mark is :)

Explanation: