Kirk: All the -irks

 Some "-irk" words, plus some "-ir-"s,
because there are so many disturbingly pretty Kirks

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Etymology of the irks:

irk (v.) : early 15c., irken, "to trouble (someone), disturb, hinder, annoy;"

kirk (n.) : c. 1200, northern England and Scottish dialectal form of church, from a Scandinavian source such as Old Norse kirkja "church,"

quirk (n.) : 1560s, "quibble, evasion," of unknown origin, perhaps connected to German quer (see queer (adj.)) via notion of twisting and slanting; Perhaps originally a technical term for a twist or flourish in weaving.  
  
shirk (v.) : 1630s, "to practice fraud or trickery,"perhaps from German schurke "scoundrel, rogue, knave, villain" (see shark (n.)). 

smirk (v.) : Old English smearcian "to smile." ... probably related to smerian "to laugh at, scorn,"

Spirk: Spock/Kirk, Space Husbands, for more images, see Let's Boldy Spirk tumblr