CREATE TABLE table_78422 ("Home team" TEXT, "Home team score" TEXT, "Away team" TEXT, "Away team score" TEXT, "Venue" TEXT, "Crowd" FLOAT, "Date" TEXT)

Name the away team for essendon
SELECT "Away team" FROM table_78422 WHERE "Home team" = 'essendon'
SELECT "Away team" FROM "table_78422" WHERE "Home team" = 'essendon'