Objective Proficiency 2002 p 15. Vocabulary

Ex 2

• Skin-deep: not as important or strongly felt as it appears to be. Superficial. E.g. Physical beauty helps, but in the end it's only skin-deep.
• Chameleon: /kəˈmiːliən/. a small lizard (= a type of reptile ) that can change colour according to its surroundings. Camaleón.

• Wilfully: done deliberately. Intencionadamente. E.g. They were charged with wilfully neglecting their children.
• Point: to lead to or suggest a particular development or logical argument. E.g. The evidence seems to point in that direction.
• Customize (-ise): /ˈkʌstəmaɪz/ to make or change something to suit the needs of the owner. E.g. You can customize the software in several ways.
• Mark out: define. Marcar. E.g. Changing their physical appearance helped our ancestors to mark out differences of role, status and kinship.
• Kinship: 1. the fact of being related in a family. Parentesco. E.g. the ties of kinship. 2. a feeling of being close to somebody because you have similar origins or attitudes. E.g. We tend to feel kinship with those who share the same values. 
• Arguably: /ˈɑːɡjuəbli/ used (often before a comparative or superlative adjective) when you are stating an opinion that you believe you could give reasons to support. Podría decirse que. E.g. He is arguably the best actor of his generation.
• Capability: (to do something/of doing something) /ˌkeɪpəˈbɪləti/ the ability or qualities necessary to do something. E.g. Animals in the zoo have lost the capability to catch/of catching food for themselves.
• A species: (pl. species) /ˈspiːʃiːz/ a group into which animals, plants, etc. that are able to breed with each other and produce healthy young are divided. Especie. E.g. a rare species of beetle. 

Please note that the plural of species is also species. That's because it comes from Latin. Here you will find a  comprehensive list of  words with an irregular plural.