A spider that has a red upper body and legs and a gray lower body is a sowbug killer spider.
A wolf spider
A grey spider with a black stripe has a distinctive black stripe running along its body, which sets it apart from other spiders.
I believe this spider friend of yours is a jumping spider, although there are lots of other spiders out there who are yellow, grey, black, orange and brown.
The distinguishing features that can help identify a brown spider with a grey abdomen are the coloration of its body parts. Look for a brown body with a grey abdomen to identify this specific type of spider.
The spider you are describing sounds like a spiny-backed orb-weaver spider (Gasteracantha cancriformis). This spider is known for its distinct coloration, with a black head and legs and a gray body with spikes or spines. It is relatively small in size and can be found in shrubs and trees, where it builds its orb-shaped webs.
Banana spider
tarantula
Be more specific
The spider you are describing is likely the gray wall jumper (Menemerus bivittatus). This species is known for its gray body and distinct black and white striped legs. It is a common jumping spider found in Kansas and across the United States.
A ladybird spider is a spider whose red body has four black dots.Specifically, the spider in question can be found natively in Greece. It carries the scientific names Eresus cinnaberinus and E. sandaliatus. It has white-striped black legs. Its fused head and thorax (prosoma) is black. Its abdomen-like rear (opisthosoma) is red, with 4 black dots.
The spider with a red upper body and grey lower body resembles a typical arachnid with a distinct color contrast. Its vibrant red cephalothorax stands out against the muted grey abdomen, which may have a smooth or slightly textured appearance. The spider's legs are often slender and may be a mix of red and grey hues, enhancing its striking appearance. This coloration may serve as a warning to predators or as camouflage in its environment.
A grey and black spider, it has a red dot under each leg. I dont know what kind of spider it is though and am not having any luck finding it on the net! But i caught one earlier to get a close look and then let it go. Its a fairly large spider too.