[orls]

“Recognise speech” / “wreck a nice beach” can sound similar (if you allow for some imprecisions, slurring, accents, etc, like noisy real-world data has).

The relevant term here is _phonemes_, the individual chunks of sounds that make the phrases up; these two phrases have shared or similar phonemes in typical English diction. e.g the first two sounds are both “reh”, “cuh”