A laryngeal consonant is generally synonymous with a glottal consonant

Glottal consonant

Glottal consonants, also called laryngeal consonants, are consonants articulated with the glottis. Many phoneticians consider them, or at least the so-called fricative, to be transitional states of the glottis without a point of articulation as other consonants have; in fact, some do not consider...

; that is, with h, ɦ, and ʔ.

Besides the glottis

Glottis

The glottis is defined as the combination of the vocal folds and the space in between the folds .-Function:...

 (vocal folds), the larynx

Larynx

The larynx , commonly called the voice box, is an organ in the neck of amphibians, reptiles and mammals involved in breathing, sound production, and protecting the trachea against food aspiration. It manipulates pitch and volume...

 includes the epiglottis

Epiglottis

The epiglottis is a flap that is made of elastic cartilage tissue covered with a mucous membrane, attached to the entrance of the larynx. It projects obliquely upwards behind the tongue and the hyoid bone, pointing dorsally. The term, like tonsils, is often incorrectly used to refer to the uvula...

 and aryepiglottic folds, though epiglottal

Epiglottal consonant

An epiglottal consonant is a consonant that is articulated with the aryepiglottic folds against the epiglottis. They are occasionally called aryepiglottal consonants.-Epiglottal consonants in the IPA:...

 and aryepiglottal consonants are usually counted as radical

Radical consonant

Radical consonants are those consonants articulated with the root of the tongue in the throat. This includes the pharyngeal, epiglottal, and epiglotto-pharyngeal places of articulation, though technically epiglottal consonants take place in the larynx....

 rather than as laryngeal. However, the diversity of sounds produced in the larynx is the subject of ongoing research, and the terminology is evolving.

The term laryngeal consonant is also used for laryngealized consonants articulated in the upper vocal tract, such as Arabic

Arabic phonology

While many languages have numerous dialects that differ in pronunciation, the Arabic language is more properly described as a continuum of varieties. This article deals primarily with Modern Standard Arabic, which is the standard variety shared by educated speakers throughout Arabic-speaking regions...

 'emphatics'

Emphatic consonant

Emphatic consonant is a term widely used in Semitic linguistics to describe one of a series of obstruent consonants which originally contrasted with series of both voiced and voiceless obstruents. In specific Semitic languages, the members of this series may be realized as pharyngealized,...

 and Korean

Korean phonology

This article is a technical description of the phonetics and phonology of Korean.Korean has many allophones, so it is important here to distinguish morphophonemics from corresponding phonemes and allophones .-Consonants:The following are phonemic transcriptions of Korean consonants.# are voiced ...

 'tense'

Faucalized voice

Faucalized voice, also called hollow or yawny voice, is the production of speech sounds with an expanded laryngeal cavity. It contrasts with harsh voice, in which the larynx is compressed....

consonants.