Kangaroo word: matches
Joey word: mates
Definitions in relation to their use in kangaroo words, taken from Google Dictionary, and edited for formatting.
matches (noun): a person viewed in regard to their eligibility for marriage, especially as regards class or wealth.
mates (noun): each of a pair of birds or other animals.
The letters M, A, T, E, and S found within the kangaroo word “matches” arrange in the listed order to complete the joey word “mates”. While a word can have multiple definitions, in relation to their use with kangaroo words, these two words share a similar meaning: an equal partner.