When I was young and first started reading on my own, if I wasn't sure, I used to always ask whomever was around what this or that word meant.
After a while, I used my own knowledge and inferred the meanings of those words I was unfamiliar with. I've never questioned my inferences until now.
Recently I heard people using the word robust in ways that just didn't fit the meaning I gave it. So of course I had to go google the meaning. And good grief! Here I'd always thought robust meant lively and strong and kinda boisterous, cos I'd always only seen the word being used to describe children. Then when I'd heard it being used to describe tastes, well, a lively kinda "party in your mouth" description doesn't sound wrong. But a lively "party wherever" part of your brain, or vehicle jus didn't sound right.
In case you're like me, and for some reason didn't know the proper meaning, it means, more or less, that it's strong and hardy.

Go google it.

Good lord, now I wonder how many other words I got wrong!