Boyfriend and Lovebird

Boyfriend noun - A male romantic companion.

Lovebird and boyfriend are semantically related In some cases you can use "Lovebird" instead a noun "Boyfriend".

Lovebird noun - Small Australian parakeet usually light green with black and yellow markings in the wild but bred in many colors.

Boyfriend and lovebird are semantically related in person whom another loves topic. You can use "Boyfriend" instead a noun "Lovebird".