Consonant: a basic speech sound in which the breath is at least partly obstructed and which can be combined with a vowel to form a syllable.

Vowel: a speech sound which is produced by comparatively open configuration of the vocal tract, with vibration of the vocal cords but without audible friction, and which is a unit of the sound system of a language that forms the nucleus of a syllable.

Diphthong: a sound formed by the combination of two vowels in a single syllable, in which the sound begins as one vowel and moves towards another (as in coin, loud, and side).

The pronunciation of “kestrel”: (kstrl)

The main definition of “philology” in English: The branch of knowledge that deals with the structure, historical development, and relationships of languages or language families; the historical study of the phonology and morphology of languages; historical linguistics.

The etymology of “crow” and look for the translation into Spanish and paste it in too:  [OE. cráwe f., corresp. to OS. krâia, MLG. krâge, krâe, krâ, LG. kraie, kreie, MDu. kraeye, Du. kraai, OHG. chrâwa, chrâja, chrâ, crâwa, crâ, MHG. kræe, krâwe, krâ, Ger. krähe; a WG. deriv. of the vb. crâwan, crâian to CROW, q.v.]  In spanish: cuervo.