They're two different things from two different eras of storytelling, technology and production values. I would suggest trying to enjoy them separately, because it's really hard to compare them. It was cool to watch and look for inspiration in to the show, but at best those are homages, not threads.
very different in my opinion. The movie is very Jurassic Park, classic Crichton. The TV adaption, especially the first two seasons have a different tone. Very religious surprisingly enough and including a lot of Meso- and Native-American elements in the first two seasons. Personally I found those seasons much more interesting than the movie. The last two seasons lose most of that unique stuff.
The moral of the movie and show are very different too. Like JP the moral of the movie Westworld is that it is hubris to try to control a complex system and eventually something will (and does) go wrong. The show is much more like Blade Runner with the robots being actually intelligent and like BR the moral is that it is wrong to enslave and give false memories to intelligent beings even if they aren't human.
IIRC the movie largely shows the park as a visitor might see it, the television series shows it as an android or employee would see it and toys with viewers who may have seen the movie a little though there is quite a bit of overlap between the two in point of view, with technology malfunctions/adaptations playing major role in both, though given the runtime of the television series is much longer, it can play with a lot of different ideas about technology and identity.
The show's plot is lously based on the second movie, Futureworld, that, as in the show, takes places years after the incident at the park that got it shut down.
Also the idea of the hosts trying to run from the park disguised by real humans is taken from FW.
And there the similarities end.
The POV is quite different from the Westworld movie.
I would say that they are different like D.A.R.Y.L. and The Terminator are.
Same setup, but different settings, era, technology, storytelling and overall tone.
As a kid from the seventies, Westworld was maybe my favorite movie. It was amazing. I recorded it from TV on VHS tape at some point and would watch and re-watch it. I don't remember everything but, as a kid, I loved the movie.
Westworld the series: just like others commented... Season 1 is a masterpiece.
It was great to enjoy the "same" plot in the movie as a kid and then as an adult with the series.
The movie was creepy as hell at the time. I saw it on late-night TV as a little kid, and the Terminator-esque ending stuck with me.
The show could have taken it to a new level, and did flirt with doing so. Interesting note: At some point in the show, they go down to some sub-basement or something where old models are stored, and in the background out of focus you can see the Yul Brynner robot standing there.
But the show goes off the rails. After season 1 it's absolute shit that will make you angry for wasting hours of your life giving it a chance. I thought hey this is going to be cool if the robots escape into the real world, but the show utterly squandered that scenario.