Easy
antonym for weaken
strengthen
saying two different and opposing things
contradictory
company shares which do not pay a fixed rate of interest
equities
a large and sudden increase in the amount of value of sth
starts with s-
surge
suffering from strain
under pressure
total profit or income you get from a business/investment
yield
Name an antonym for boom
slump
a temporary and fragile situation caused by a rapid increase in something
could be economic, housing, credit ...
bubble
turmoil
likely to change
starts with v-
volatile
cause something to happen
a name of the popular TV series in Russia:)
Trigger
confident, successful, staying at a high level
buoyant
a person who buys land, shares etc. to make a profit
investor
the probable future
a synonym to the word scenario
outlook
increase in value after the period it has fallen
rally