Full-grown and Heavy-duty

Full-grown adjective - (of animals) fully developed.

Heavy-duty and full-grown are semantically related. In some cases you can use "Heavy-duty" instead an adjective phrase "Full-grown".

Heavy-duty adjective - Extreme in degree, power, or effect.

Full-grown and heavy-duty are semantically related. Sometimes you can use "Full-grown" instead an adjective phrase "Heavy-duty".