1 - Since older people perform certain tasks better than the young do, it is wrong to categorize them as generally less capable.

2 - Biologists who classify animal species have tried to categorize the panda according to whether its traits are "homologous" or merely "analogous" to similar traits in other species.

3 - Many of the non-essential commodities like motor car and T.V have been upgraded to essential category in all modern advanced countries.

4 - An overweight person beyond the age of forty, who has a family history of diabetes, fails in the high-risk category for contracting this disease.

5 - If one simply uses a dictionary to determine the grammatical category of a word then there is little indication of which are the more likely syntactic categories.