That's "quick release" wheels - most newer bikes will have that - you actually will have to worry about locking them down when you're parked, so be sure to get a good lock in your budget.
The lockable suspension fork - that refers to the fork that holds the front wheel. The Apollo has a suspension fork, meaning if you hit a bump, it absorbs some of the shock. (you can see this by pushing down on the handlebar). The Elwood comes in two models. One has a suspension fork, the other will not - it'll look like just a regular fork that doesn't spring down when you push on it.
A "lockable" suspension fork means you can lock out the suspension function, so it acts like a regular rigid fork. So if you find it annoying or are riding exclusively on smooth pavement that doesn't require it, you can lock it out. Otherwise you'll lose some energy as the fork will bounce a little as you pedal.
Either way, those features are trumped by which bike will fit you best. If you can, get your bike shop to let you take a "test ride" with both bikes and ride them around in the neighborhood near the shop. See which bike feels better to you.
Then when you decide to get the bike, be sure the tires are puncture-resistant, or have the shop put liners in - saves you from getting a lot of flats.
And if you think you'll be riding in the rain, have fenders put on.