my take:
news stories: isolated instances
trends: news + temporal element (over x weeks/months/years) + a unifying link
news stories sometime signal trends. eg: trumps text exchange w denmark (isolated instance) signals heightened geopolitical tensions & EU's increased focus on internal defence and security [2 interconnected trends, possibly evidenced by many other news stories as well (increased defence expenditure for member states, brussels preparing for retaliatory tariffs against the US at upwards of ~ 90 billion euros, blah blah)]
so, here, i extrapolated a trend ive witnessed overtime (arguably spanning 4 years, since russias invasion of ukraine (2022)? or more recent since trumps second term?) from some specific news stories
imo unifying links can be strong or weak and it really doesn't matter; contrarily, the weaker the link, the more analysis required, and the cooler i look to the interviewer.
for instance: if we look at house prices, they fell the hardest recently in some years(FT article this week), this raised real estate developer's expectations of sales (happy), which funnels more money back into projects, plus the expected interest rate cuts over the next few months will (imo) only increase this cash injection. the stakeholders here aren't just the real estate firms but also pension funds that are tip to tip with property developers as they are huge investors therein. so here the link from house prices to pension funds is weak, but oh man i sound so cool rn the interviewers gonna be blown away by my innovative entrepreneurial and uhhh resilient market knowledge
again flag: this is just my take and i may be off with some things ive said (please correct me!)