Here's what rhymes with friendship.

Consider these alternatives

relationship / which cooperation / operation relations / nations ties / eyes partnership / which bilateral / natural love / of admiration / operation gratitude / food sincere / will solidarity / therapy between / seen sino / albino enduring / during cooperative / native deepen / region respect / effect loyalty / royalty appreciation / relation friend / end mutually / brutually commitment / equipment lifelong / long importance / accordance collaboration / operation spirit / village profound / found desire / fire