Matching line endings do not automatically constitute jinas. Rhyme and sajʿ concern the cadence of endings, whereas jinas compares two particular expressions for resemblance alongside different senses.
Neither is repetition of one word in one meaning sufficient. Two occurrences of “al-ʿilm” meaning knowledge are repetition; “insān” as person and “insān” as the pupil of an eye create distinct semantic values.