Synonyms for Shelter:

n.

in-law apartment, home unit, domicile, active adult community, cohousing, gated community, council house, Doublewide, Group Home, affordable housing. housing, cat litter, heel, lodging, kennel, domesticate, answer to, handler, call off, exercise, kitty litter, litter. safety, stand up for, keep (a) watch, covert, attack, retreat, watch over. home, fight your corner, hold off, stand up to, hospice, drive off, cover yourself, fight off, deflect, fend off, hospital, parry. Humpy, pillbox, blockhouse, fallout shelter, harborage, Nissen Hut, lean-to, bunker, bomb shelter, guardhouse. hideaway, house, hiding place, cache. ambush (noun)
hiding place.
bunker (noun)
blockhouse.
cover (noun)
harborage.
darkness (noun)
shadow.
defense (noun)
countermeasure, fortress, barrier, defense, protection, wall, aversion, stronghold, security, argument, harbor, resistance, response, rebuttal, moat, armor.
hospital (noun)
hospice.
hut (noun)
lean-to.
protection, habitat (noun)
housing, screen, shadow, hut, shade, shed, guardian, harborage, covert, defense, guard, protector, shield, cover, house, asylum, shack, refuge, home, lodging, harbor, security, hideout, hideaway, tent, preserve, haven, sanctuary, retreat, roof, safety.
refuge (noun)
haven, refuge, sanctuary, dugout, asylum, foxhole, hideout.
shanty (noun)
shack.
shelter (noun)
tax shelter, protection.
state (noun)
protection.

v.

defend (verb)
oppose, save, support, police, shield, sustain, barricade, counter, avert, backfire, bar, reply, uphold, argue, guard, answer, secure, resist, fend, protect, buffer, screen, defend, cover, ward, rebut, counterattack, safeguard, respond, retort, return.
protect (verb)
maintain, preserve, conserve.
provide safety, cover (verb)
protect, watch over, secure, defend, ward, safeguard.

Other synonyms:

hospice, stand up for, roof, harborage, safety, lodging. retreat, hospital. home. bin
bunker.
cover
watch over, fend.
habitation
housing.
protect
defend.
shack
hut.
Other relevant words:
hospital, lean-to, housing, Doublewide, exercise, Humpy, blockhouse, guardian, covert, cohousing, pillbox, cache, litter, deflect, bomb shelter, safety, heel, hut, shade, fallout shelter, watch over, domesticate, roof, harborage, lodging, shed, domicile, attack, tent, hideaway, guardhouse, shadow, tax shelter, parry, bunker, retreat, kennel, shack, home, handler, protector, house, hospice.