<span>They are both in the superfamily hominoidea. This classifies species that have a tubular tympanic bone, dental formula that includes incisors, molars, and rounded cusps, broad nasal regions, no tail, broad palates, long upper limbs, hind limbs, a large brain, and a size between 4 and 200 kilograms.</span>
The "Introduction" section of a research article contains the detailed background information on the topic and the problem that is being answered by the research.
Experimental design as well as materials and methods are mentioned in the "Materials and Methods" section of a research article.
