Because I'm way too lazy to create a table for this, here's the sector weightings for NOBL and VTI (bolding mine):
Sector, NOBL, VTI
Basic Materials, 0.1128, 0.0278Consumer Cyclical, 0.092, 0.1234
Financial Services, 0.09, 0.156Realestate, 0.0192, 0.035
Consumer Defensive, 0.286, 0.0653Healthcare, 0.1146, 0.1447
Utilities, 0.0188, 0.0278
Communication Services, 0.0186, 0.0295
Energy, 0.0357, 0.0575
Industrials, 0.2122, 0.1103
Technology, 0, 0.2226I've bolded what appear to be the biggest differences - NOBL seems a lot heavier in Basic Materials, Consumer Defensive (food, beverages, household and personal products, packaging, or tobacco), and Industrials, and has no Technology at all.
This isn't surprising - the heavier-weighted sectors are usually older companies, which are more likely to have dividends. I think their price volatility has historically been lower than Tech, so they're seen as more "steady Eddies", and can help you avoid panicking and selling low during the next bear market.
NOBL isn't necessarily less risky, but it's likely less volatile, which is often easier to handle for folks who are more risk averse. Have you checked out Vanguard's tool for assessing your risk tolerance? That may help you to see where you are on that spectrum and give you an idea of where you should be investing.
https://personal.vanguard.com/us/FundsInvQuestionnaireI second the idea for checking out mutual funds at Vanguard and Fidelity for similar high-dividend offerings, and check the expense ratios. For NOBL, also add in your FA's fees (per trade? assets under management?) to add to those expenses.
It's kind of a slog going through all those numbers, but it also helps you learn, which is good!