WordNet sense 1 (very hot and finely tapering pepper of special pungency):

Chile, chili, chilli, chili pepper

WordNet sense 2 (uncomfortably cool):

chill

WordNet sense 3 (neither warm nor very cold; giving relief from heat):

cool

WordNet sense 4 (not disposed to friendship or friendliness):

unfriendly

WordNet sense 5 (unsusceptible to or destitute of or showing no emotion):

unemotional