كَالْأَسَدِ
Like a lion.
As an answer to the established question about Zayd, this form states the particle and comparison term, while leaving the subject implicit. Omission of the subject does not force omission of the particle.
Another form is “كَالْأَسَدِ فِي الشَّجَاعَةِ,” in which Zayd remains unspoken but the shared respect is also specified. The two expressions differ by one variable—the stated respect—and must not be counted as the same structural pattern.