Low-end and Third-rate

Low-end adjective - Costing little.

Third-rate and low-end are semantically related. In some cases you can use "Third-rate" instead an adjective phrase "Low-end".

Third-rate adjective - Of lesser quality than second-rate.

Low-end and third-rate are semantically related. Sometimes you can use "Low-end" instead an adjective phrase "Third-rate".