Insect has 6 pairs of legs and one pair of wings while spider has 4 pairs of legs and no wings
Insect has 4 pair of legs and two pairs of wings while spider has 3 pairs of legs and no wings
Insect has 3 pairs of legs and two pairs of wings and spider has 4 pairs of legs and no wings
Insect has 3 pairs of legs and generally no wings while spider has 5 pairs of legs and generally one pair of wings